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Finding the Fourth Proportional to 71,566.60, 107,436.30 and 71,048.20

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Solution

The fourth proportional to 71,566.60, 107,436.30 and 71,048.20 is: 106,658.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,566.60 : 107,436.30 = 71,048.20 : x
  2. Step 2: Convert to fraction form
    71,566.60/107,436.30 = 71,048.20/x
  3. Step 3: Cross multiply
    71,566.60x = 107,436.30 × 71,048.20
  4. Step 4: Simplify right side
    71,566.60x = 7,633,155,729.66
  5. Step 5: Solve for x
    x = 7,633,155,729.66/71,566.60
  6. Step 6: Final answer
    x = 106,658.07

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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.