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Finding the Fourth Proportional to 78,425.77, 108,218.78 and 44,426.97

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Solution

The fourth proportional to 78,425.77, 108,218.78 and 44,426.97 is: 61,304.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,425.77 : 108,218.78 = 44,426.97 : x
  2. Step 2: Convert to fraction form
    78,425.77/108,218.78 = 44,426.97/x
  3. Step 3: Cross multiply
    78,425.77x = 108,218.78 × 44,426.97
  4. Step 4: Simplify right side
    78,425.77x = 4,807,832,473.27
  5. Step 5: Solve for x
    x = 4,807,832,473.27/78,425.77
  6. Step 6: Final answer
    x = 61,304.25

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1.5x scale

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.