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Finding the Fourth Proportional to 139,593.17, 192,640.07 and 75,931.12

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Solution

The fourth proportional to 139,593.17, 192,640.07 and 75,931.12 is: 104,785.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,593.17 : 192,640.07 = 75,931.12 : x
  2. Step 2: Convert to fraction form
    139,593.17/192,640.07 = 75,931.12/x
  3. Step 3: Cross multiply
    139,593.17x = 192,640.07 × 75,931.12
  4. Step 4: Simplify right side
    139,593.17x = 14,627,376,702.61
  5. Step 5: Solve for x
    x = 14,627,376,702.61/139,593.17
  6. Step 6: Final answer
    x = 104,785.76

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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.