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Finding the Fourth Proportional to 664,141.70, 996,212.55 and 612,820.10

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Solution

The fourth proportional to 664,141.70, 996,212.55 and 612,820.10 is: 919,230.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,141.70 : 996,212.55 = 612,820.10 : x
  2. Step 2: Convert to fraction form
    664,141.70/996,212.55 = 612,820.10/x
  3. Step 3: Cross multiply
    664,141.70x = 996,212.55 × 612,820.10
  4. Step 4: Simplify right side
    664,141.70x = 610,499,074,512.26
  5. Step 5: Solve for x
    x = 610,499,074,512.26/664,141.70
  6. Step 6: Final answer
    x = 919,230.15

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Double scale
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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.