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Finding the Fourth Proportional to 104,680.57, 144,397.68 and 65,856.66

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Solution

The fourth proportional to 104,680.57, 144,397.68 and 65,856.66 is: 90,843.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,680.57 : 144,397.68 = 65,856.66 : x
  2. Step 2: Convert to fraction form
    104,680.57/144,397.68 = 65,856.66/x
  3. Step 3: Cross multiply
    104,680.57x = 144,397.68 × 65,856.66
  4. Step 4: Simplify right side
    104,680.57x = 9,509,548,916.55
  5. Step 5: Solve for x
    x = 9,509,548,916.55/104,680.57
  6. Step 6: Final answer
    x = 90,843.50

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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.