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Finding the Fourth Proportional to 71,585.79, 98,789.58 and 39,323.39

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Solution

The fourth proportional to 71,585.79, 98,789.58 and 39,323.39 is: 54,266.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,585.79 : 98,789.58 = 39,323.39 : x
  2. Step 2: Convert to fraction form
    71,585.79/98,789.58 = 39,323.39/x
  3. Step 3: Cross multiply
    71,585.79x = 98,789.58 × 39,323.39
  4. Step 4: Simplify right side
    71,585.79x = 3,884,741,182.28
  5. Step 5: Solve for x
    x = 3,884,741,182.28/71,585.79
  6. Step 6: Final answer
    x = 54,266.93

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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.