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Finding the Fourth Proportional to 116,039.20, 160,134.07 and 65,738.20

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Solution

The fourth proportional to 116,039.20, 160,134.07 and 65,738.20 is: 90,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,039.20 : 160,134.07 = 65,738.20 : x
  2. Step 2: Convert to fraction form
    116,039.20/160,134.07 = 65,738.20/x
  3. Step 3: Cross multiply
    116,039.20x = 160,134.07 × 65,738.20
  4. Step 4: Simplify right side
    116,039.20x = 10,526,925,520.47
  5. Step 5: Solve for x
    x = 10,526,925,520.47/116,039.20
  6. Step 6: Final answer
    x = 90,718.70

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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.