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Finding the Fourth Proportional to 77,473.66, 106,917.15 and 60,677.50

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Solution

The fourth proportional to 77,473.66, 106,917.15 and 60,677.50 is: 83,737.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,473.66 : 106,917.15 = 60,677.50 : x
  2. Step 2: Convert to fraction form
    77,473.66/106,917.15 = 60,677.50/x
  3. Step 3: Cross multiply
    77,473.66x = 106,917.15 × 60,677.50
  4. Step 4: Simplify right side
    77,473.66x = 6,487,465,369.13
  5. Step 5: Solve for x
    x = 6,487,465,369.13/77,473.66
  6. Step 6: Final answer
    x = 83,737.69

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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.