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Finding the Fourth Proportional to 98,687.92, 148,090.20 and 36,402.16

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Solution

The fourth proportional to 98,687.92, 148,090.20 and 36,402.16 is: 54,624.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,687.92 : 148,090.20 = 36,402.16 : x
  2. Step 2: Convert to fraction form
    98,687.92/148,090.20 = 36,402.16/x
  3. Step 3: Cross multiply
    98,687.92x = 148,090.20 × 36,402.16
  4. Step 4: Simplify right side
    98,687.92x = 5,390,803,154.83
  5. Step 5: Solve for x
    x = 5,390,803,154.83/98,687.92
  6. Step 6: Final answer
    x = 54,624.75

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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.