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Finding the Fourth Proportional to 506,892.30, 699,438.15 and 280,537.26

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Solution

The fourth proportional to 506,892.30, 699,438.15 and 280,537.26 is: 387,100.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,892.30 : 699,438.15 = 280,537.26 : x
  2. Step 2: Convert to fraction form
    506,892.30/699,438.15 = 280,537.26/x
  3. Step 3: Cross multiply
    506,892.30x = 699,438.15 × 280,537.26
  4. Step 4: Simplify right side
    506,892.30x = 196,218,462,140.47
  5. Step 5: Solve for x
    x = 196,218,462,140.47/506,892.30
  6. Step 6: Final answer
    x = 387,100.89

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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.