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Finding the Fourth Proportional to 125,639.76, 173,393.16 and 75,337.68

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Solution

The fourth proportional to 125,639.76, 173,393.16 and 75,337.68 is: 103,972.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,639.76 : 173,393.16 = 75,337.68 : x
  2. Step 2: Convert to fraction form
    125,639.76/173,393.16 = 75,337.68/x
  3. Step 3: Cross multiply
    125,639.76x = 173,393.16 × 75,337.68
  4. Step 4: Simplify right side
    125,639.76x = 13,063,038,402.27
  5. Step 5: Solve for x
    x = 13,063,038,402.27/125,639.76
  6. Step 6: Final answer
    x = 103,972.17

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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.