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Finding the Fourth Proportional to 664,452.10, 996,643.32 and 191,118.88

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Solution

The fourth proportional to 664,452.10, 996,643.32 and 191,118.88 is: 286,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,452.10 : 996,643.32 = 191,118.88 : x
  2. Step 2: Convert to fraction form
    664,452.10/996,643.32 = 191,118.88/x
  3. Step 3: Cross multiply
    664,452.10x = 996,643.32 × 191,118.88
  4. Step 4: Simplify right side
    664,452.10x = 190,477,355,077.88
  5. Step 5: Solve for x
    x = 190,477,355,077.88/664,452.10
  6. Step 6: Final answer
    x = 286,668.30

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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.