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Finding the Fourth Proportional to 98,522.47, 135,961.17 and 56,081.01

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Solution

The fourth proportional to 98,522.47, 135,961.17 and 56,081.01 is: 77,391.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,522.47 : 135,961.17 = 56,081.01 : x
  2. Step 2: Convert to fraction form
    98,522.47/135,961.17 = 56,081.01/x
  3. Step 3: Cross multiply
    98,522.47x = 135,961.17 × 56,081.01
  4. Step 4: Simplify right side
    98,522.47x = 7,624,838,774.17
  5. Step 5: Solve for x
    x = 7,624,838,774.17/98,522.47
  6. Step 6: Final answer
    x = 77,391.88

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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.