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Finding the Fourth Proportional to 78,568.98, 108,436.36 and 44,585.84

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Solution

The fourth proportional to 78,568.98, 108,436.36 and 44,585.84 is: 61,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,568.98 : 108,436.36 = 44,585.84 : x
  2. Step 2: Convert to fraction form
    78,568.98/108,436.36 = 44,585.84/x
  3. Step 3: Cross multiply
    78,568.98x = 108,436.36 × 44,585.84
  4. Step 4: Simplify right side
    78,568.98x = 4,834,726,197.14
  5. Step 5: Solve for x
    x = 4,834,726,197.14/78,568.98
  6. Step 6: Final answer
    x = 61,534.80

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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.