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Finding the Fourth Proportional to 80,854.40, 121,166.40 and 59,628.80

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Solution

The fourth proportional to 80,854.40, 121,166.40 and 59,628.80 is: 89,358.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,854.40 : 121,166.40 = 59,628.80 : x
  2. Step 2: Convert to fraction form
    80,854.40/121,166.40 = 59,628.80/x
  3. Step 3: Cross multiply
    80,854.40x = 121,166.40 × 59,628.80
  4. Step 4: Simplify right side
    80,854.40x = 7,225,007,032.32
  5. Step 5: Solve for x
    x = 7,225,007,032.32/80,854.40
  6. Step 6: Final answer
    x = 89,358.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.