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Finding the Fourth Proportional to 77,517.72, 106,973.10 and 43,526.48

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Solution

The fourth proportional to 77,517.72, 106,973.10 and 43,526.48 is: 60,065.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,517.72 : 106,973.10 = 43,526.48 : x
  2. Step 2: Convert to fraction form
    77,517.72/106,973.10 = 43,526.48/x
  3. Step 3: Cross multiply
    77,517.72x = 106,973.10 × 43,526.48
  4. Step 4: Simplify right side
    77,517.72x = 4,656,162,012.62
  5. Step 5: Solve for x
    x = 4,656,162,012.62/77,517.72
  6. Step 6: Final answer
    x = 60,065.77

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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.