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Finding the Fourth Proportional to 161,013.80, 241,520.70 and 98,719.40

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Solution

The fourth proportional to 161,013.80, 241,520.70 and 98,719.40 is: 148,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,013.80 : 241,520.70 = 98,719.40 : x
  2. Step 2: Convert to fraction form
    161,013.80/241,520.70 = 98,719.40/x
  3. Step 3: Cross multiply
    161,013.80x = 241,520.70 × 98,719.40
  4. Step 4: Simplify right side
    161,013.80x = 23,842,778,591.58
  5. Step 5: Solve for x
    x = 23,842,778,591.58/161,013.80
  6. Step 6: Final answer
    x = 148,079.10

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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.