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Finding the Fourth Proportional to 98,188.70, 135,501.30 and 55,748.13

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Solution

The fourth proportional to 98,188.70, 135,501.30 and 55,748.13 is: 76,932.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,188.70 : 135,501.30 = 55,748.13 : x
  2. Step 2: Convert to fraction form
    98,188.70/135,501.30 = 55,748.13/x
  3. Step 3: Cross multiply
    98,188.70x = 135,501.30 × 55,748.13
  4. Step 4: Simplify right side
    98,188.70x = 7,553,944,087.57
  5. Step 5: Solve for x
    x = 7,553,944,087.57/98,188.70
  6. Step 6: Final answer
    x = 76,932.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.