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Finding the Fourth Proportional to 539,613.32, 744,628.20 and 297,857.12

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Solution

The fourth proportional to 539,613.32, 744,628.20 and 297,857.12 is: 411,021.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,613.32 : 744,628.20 = 297,857.12 : x
  2. Step 2: Convert to fraction form
    539,613.32/744,628.20 = 297,857.12/x
  3. Step 3: Cross multiply
    539,613.32x = 744,628.20 × 297,857.12
  4. Step 4: Simplify right side
    539,613.32x = 221,792,811,122.78
  5. Step 5: Solve for x
    x = 221,792,811,122.78/539,613.32
  6. Step 6: Final answer
    x = 411,021.75

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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.