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Finding the Fourth Proportional to 71,561.93, 98,750.90 and 39,730.82

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Solution

The fourth proportional to 71,561.93, 98,750.90 and 39,730.82 is: 54,826.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,561.93 : 98,750.90 = 39,730.82 : x
  2. Step 2: Convert to fraction form
    71,561.93/98,750.90 = 39,730.82/x
  3. Step 3: Cross multiply
    71,561.93x = 98,750.90 × 39,730.82
  4. Step 4: Simplify right side
    71,561.93x = 3,923,454,034.08
  5. Step 5: Solve for x
    x = 3,923,454,034.08/71,561.93
  6. Step 6: Final answer
    x = 54,826.00

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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.