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Finding the Fourth Proportional to 71,585.91, 98,789.75 and 39,323.52

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Solution

The fourth proportional to 71,585.91, 98,789.75 and 39,323.52 is: 54,267.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,585.91 : 98,789.75 = 39,323.52 : x
  2. Step 2: Convert to fraction form
    71,585.91/98,789.75 = 39,323.52/x
  3. Step 3: Cross multiply
    71,585.91x = 98,789.75 × 39,323.52
  4. Step 4: Simplify right side
    71,585.91x = 3,884,760,808.23
  5. Step 5: Solve for x
    x = 3,884,760,808.23/71,585.91
  6. Step 6: Final answer
    x = 54,267.11

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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.