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Finding the Fourth Proportional to 98,892.80, 148,412.10 and 65,601.80

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Solution

The fourth proportional to 98,892.80, 148,412.10 and 65,601.80 is: 98,451.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,892.80 : 148,412.10 = 65,601.80 : x
  2. Step 2: Convert to fraction form
    98,892.80/148,412.10 = 65,601.80/x
  3. Step 3: Cross multiply
    98,892.80x = 148,412.10 × 65,601.80
  4. Step 4: Simplify right side
    98,892.80x = 9,736,100,901.78
  5. Step 5: Solve for x
    x = 9,736,100,901.78/98,892.80
  6. Step 6: Final answer
    x = 98,451.06

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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.