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Finding the Fourth Proportional to 88,712.80, 133,069.20 and 46,576.60

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Solution

The fourth proportional to 88,712.80, 133,069.20 and 46,576.60 is: 69,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,712.80 : 133,069.20 = 46,576.60 : x
  2. Step 2: Convert to fraction form
    88,712.80/133,069.20 = 46,576.60/x
  3. Step 3: Cross multiply
    88,712.80x = 133,069.20 × 46,576.60
  4. Step 4: Simplify right side
    88,712.80x = 6,197,910,900.72
  5. Step 5: Solve for x
    x = 6,197,910,900.72/88,712.80
  6. Step 6: Final answer
    x = 69,864.90

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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.