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Finding the Fourth Proportional to 78,595.97, 108,255.83 and 60,411.92

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Solution

The fourth proportional to 78,595.97, 108,255.83 and 60,411.92 is: 83,209.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,595.97 : 108,255.83 = 60,411.92 : x
  2. Step 2: Convert to fraction form
    78,595.97/108,255.83 = 60,411.92/x
  3. Step 3: Cross multiply
    78,595.97x = 108,255.83 × 60,411.92
  4. Step 4: Simplify right side
    78,595.97x = 6,539,941,698.15
  5. Step 5: Solve for x
    x = 6,539,941,698.15/78,595.97
  6. Step 6: Final answer
    x = 83,209.64

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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.