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Finding the Fourth Proportional to 169,990.74, 234,582.46 and 93,509.78

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Solution

The fourth proportional to 169,990.74, 234,582.46 and 93,509.78 is: 129,040.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,990.74 : 234,582.46 = 93,509.78 : x
  2. Step 2: Convert to fraction form
    169,990.74/234,582.46 = 93,509.78/x
  3. Step 3: Cross multiply
    169,990.74x = 234,582.46 × 93,509.78
  4. Step 4: Simplify right side
    169,990.74x = 21,935,754,226.46
  5. Step 5: Solve for x
    x = 21,935,754,226.46/169,990.74
  6. Step 6: Final answer
    x = 129,040.88

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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.