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Finding the Fourth Proportional to 64,139.77, 88,419.76 and 44,959.78

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Solution

The fourth proportional to 64,139.77, 88,419.76 and 44,959.78 is: 61,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,139.77 : 88,419.76 = 44,959.78 : x
  2. Step 2: Convert to fraction form
    64,139.77/88,419.76 = 44,959.78/x
  3. Step 3: Cross multiply
    64,139.77x = 88,419.76 × 44,959.78
  4. Step 4: Simplify right side
    64,139.77x = 3,975,332,957.25
  5. Step 5: Solve for x
    x = 3,975,332,957.25/64,139.77
  6. Step 6: Final answer
    x = 61,979.22

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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.