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Finding the Fourth Proportional to 71,643.54, 98,863.50 and 44,784.78

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Solution

The fourth proportional to 71,643.54, 98,863.50 and 44,784.78 is: 61,800.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,643.54 : 98,863.50 = 44,784.78 : x
  2. Step 2: Convert to fraction form
    71,643.54/98,863.50 = 44,784.78/x
  3. Step 3: Cross multiply
    71,643.54x = 98,863.50 × 44,784.78
  4. Step 4: Simplify right side
    71,643.54x = 4,427,580,097.53
  5. Step 5: Solve for x
    x = 4,427,580,097.53/71,643.54
  6. Step 6: Final answer
    x = 61,800.13

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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.