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Finding the Fourth Proportional to 480,689.15, 721,105.46 and 177,060.17

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Solution

The fourth proportional to 480,689.15, 721,105.46 and 177,060.17 is: 265,616.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,689.15 : 721,105.46 = 177,060.17 : x
  2. Step 2: Convert to fraction form
    480,689.15/721,105.46 = 177,060.17/x
  3. Step 3: Cross multiply
    480,689.15x = 721,105.46 × 177,060.17
  4. Step 4: Simplify right side
    480,689.15x = 127,679,055,335.53
  5. Step 5: Solve for x
    x = 127,679,055,335.53/480,689.15
  6. Step 6: Final answer
    x = 265,616.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.