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Finding the Fourth Proportional to 664,305,827.40, 996,458,741.10 and 492,118,943.40

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Solution

The fourth proportional to 664,305,827.40, 996,458,741.10 and 492,118,943.40 is: 738,178,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,305,827.40 : 996,458,741.10 = 492,118,943.40 : x
  2. Step 2: Convert to fraction form
    664,305,827.40/996,458,741.10 = 492,118,943.40/x
  3. Step 3: Cross multiply
    664,305,827.40x = 996,458,741.10 × 492,118,943.40
  4. Step 4: Simplify right side
    664,305,827.40x = 490,376,222,811,826,112
  5. Step 5: Solve for x
    x = 490,376,222,811,826,112/664,305,827.40
  6. Step 6: Final answer
    x = 738,178,415.10

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Double scale
Find fourth proportional to 664,305,828.40, 996,458,742.60 and 492,118,944.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.