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Finding the Fourth Proportional to 176,171.54, 243,116.89 and 100,721.62

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Solution

The fourth proportional to 176,171.54, 243,116.89 and 100,721.62 is: 138,995.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,171.54 : 243,116.89 = 100,721.62 : x
  2. Step 2: Convert to fraction form
    176,171.54/243,116.89 = 100,721.62/x
  3. Step 3: Cross multiply
    176,171.54x = 243,116.89 × 100,721.62
  4. Step 4: Simplify right side
    176,171.54x = 24,487,127,010.16
  5. Step 5: Solve for x
    x = 24,487,127,010.16/176,171.54
  6. Step 6: Final answer
    x = 138,995.93

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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.