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Finding the Fourth Proportional to 158,220.17, 218,449.54 and 93,710.15

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Solution

The fourth proportional to 158,220.17, 218,449.54 and 93,710.15 is: 129,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,220.17 : 218,449.54 = 93,710.15 : x
  2. Step 2: Convert to fraction form
    158,220.17/218,449.54 = 93,710.15/x
  3. Step 3: Cross multiply
    158,220.17x = 218,449.54 × 93,710.15
  4. Step 4: Simplify right side
    158,220.17x = 20,470,939,004.91
  5. Step 5: Solve for x
    x = 20,470,939,004.91/158,220.17
  6. Step 6: Final answer
    x = 129,382.61

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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.