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Finding the Fourth Proportional to 71,291.82, 98,389.71 and 39,462.06

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Solution

The fourth proportional to 71,291.82, 98,389.71 and 39,462.06 is: 54,461.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,291.82 : 98,389.71 = 39,462.06 : x
  2. Step 2: Convert to fraction form
    71,291.82/98,389.71 = 39,462.06/x
  3. Step 3: Cross multiply
    71,291.82x = 98,389.71 × 39,462.06
  4. Step 4: Simplify right side
    71,291.82x = 3,882,660,639.40
  5. Step 5: Solve for x
    x = 3,882,660,639.40/71,291.82
  6. Step 6: Final answer
    x = 54,461.52

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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.