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Finding the Fourth Proportional to 98,549.31, 147,934.53 and 39,426.21

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Solution

The fourth proportional to 98,549.31, 147,934.53 and 39,426.21 is: 59,183.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,549.31 : 147,934.53 = 39,426.21 : x
  2. Step 2: Convert to fraction form
    98,549.31/147,934.53 = 39,426.21/x
  3. Step 3: Cross multiply
    98,549.31x = 147,934.53 × 39,426.21
  4. Step 4: Simplify right side
    98,549.31x = 5,832,497,846.03
  5. Step 5: Solve for x
    x = 5,832,497,846.03/98,549.31
  6. Step 6: Final answer
    x = 59,183.55

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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.