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Finding the Fourth Proportional to 124,057.90, 186,086.85 and 71,569.90

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Solution

The fourth proportional to 124,057.90, 186,086.85 and 71,569.90 is: 107,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,057.90 : 186,086.85 = 71,569.90 : x
  2. Step 2: Convert to fraction form
    124,057.90/186,086.85 = 71,569.90/x
  3. Step 3: Cross multiply
    124,057.90x = 186,086.85 × 71,569.90
  4. Step 4: Simplify right side
    124,057.90x = 13,318,217,245.82
  5. Step 5: Solve for x
    x = 13,318,217,245.82/124,057.90
  6. Step 6: Final answer
    x = 107,354.85

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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.