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Finding the Fourth Proportional to 98,494.92, 147,530.18 and 66,730.71

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Solution

The fourth proportional to 98,494.92, 147,530.18 and 66,730.71 is: 99,952.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,494.92 : 147,530.18 = 66,730.71 : x
  2. Step 2: Convert to fraction form
    98,494.92/147,530.18 = 66,730.71/x
  3. Step 3: Cross multiply
    98,494.92x = 147,530.18 × 66,730.71
  4. Step 4: Simplify right side
    98,494.92x = 9,844,793,324.17
  5. Step 5: Solve for x
    x = 9,844,793,324.17/98,494.92
  6. Step 6: Final answer
    x = 99,952.30

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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.