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Finding the Fourth Proportional to 630,613.92, 868,768.56 and 439,281.12

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Solution

The fourth proportional to 630,613.92, 868,768.56 and 439,281.12 is: 605,177.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,613.92 : 868,768.56 = 439,281.12 : x
  2. Step 2: Convert to fraction form
    630,613.92/868,768.56 = 439,281.12/x
  3. Step 3: Cross multiply
    630,613.92x = 868,768.56 × 439,281.12
  4. Step 4: Simplify right side
    630,613.92x = 381,633,626,057.59
  5. Step 5: Solve for x
    x = 381,633,626,057.59/630,613.92
  6. Step 6: Final answer
    x = 605,177.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.