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Finding the Fourth Proportional to 178,317.97, 245,935.31 and 156,761.63

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Solution

The fourth proportional to 178,317.97, 245,935.31 and 156,761.63 is: 216,204.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,317.97 : 245,935.31 = 156,761.63 : x
  2. Step 2: Convert to fraction form
    178,317.97/245,935.31 = 156,761.63/x
  3. Step 3: Cross multiply
    178,317.97x = 245,935.31 × 156,761.63
  4. Step 4: Simplify right side
    178,317.97x = 38,553,220,070.16
  5. Step 5: Solve for x
    x = 38,553,220,070.16/178,317.97
  6. Step 6: Final answer
    x = 216,204.91

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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.