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Finding the Fourth Proportional to 178,988.76, 247,008.48 and 98,411.16

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Solution

The fourth proportional to 178,988.76, 247,008.48 and 98,411.16 is: 135,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,988.76 : 247,008.48 = 98,411.16 : x
  2. Step 2: Convert to fraction form
    178,988.76/247,008.48 = 98,411.16/x
  3. Step 3: Cross multiply
    178,988.76x = 247,008.48 × 98,411.16
  4. Step 4: Simplify right side
    178,988.76x = 24,308,391,046.64
  5. Step 5: Solve for x
    x = 24,308,391,046.64/178,988.76
  6. Step 6: Final answer
    x = 135,809.60

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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.