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Finding the Fourth Proportional to 77,527.78, 115,766.57 and 61,553.57

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Solution

The fourth proportional to 77,527.78, 115,766.57 and 61,553.57 is: 91,913.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,527.78 : 115,766.57 = 61,553.57 : x
  2. Step 2: Convert to fraction form
    77,527.78/115,766.57 = 61,553.57/x
  3. Step 3: Cross multiply
    77,527.78x = 115,766.57 × 61,553.57
  4. Step 4: Simplify right side
    77,527.78x = 7,125,845,550.15
  5. Step 5: Solve for x
    x = 7,125,845,550.15/77,527.78
  6. Step 6: Final answer
    x = 91,913.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.