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Finding the Fourth Proportional to 98,951.92, 136,560.24 and 55,916.48

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Solution

The fourth proportional to 98,951.92, 136,560.24 and 55,916.48 is: 77,168.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,951.92 : 136,560.24 = 55,916.48 : x
  2. Step 2: Convert to fraction form
    98,951.92/136,560.24 = 55,916.48/x
  3. Step 3: Cross multiply
    98,951.92x = 136,560.24 × 55,916.48
  4. Step 4: Simplify right side
    98,951.92x = 7,635,967,928.76
  5. Step 5: Solve for x
    x = 7,635,967,928.76/98,951.92
  6. Step 6: Final answer
    x = 77,168.47

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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.