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Finding the Fourth Proportional to 71,606.34, 98,818.32 and 39,341.38

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Solution

The fourth proportional to 71,606.34, 98,818.32 and 39,341.38 is: 54,291.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,606.34 : 98,818.32 = 39,341.38 : x
  2. Step 2: Convert to fraction form
    71,606.34/98,818.32 = 39,341.38/x
  3. Step 3: Cross multiply
    71,606.34x = 98,818.32 × 39,341.38
  4. Step 4: Simplify right side
    71,606.34x = 3,887,649,078.08
  5. Step 5: Solve for x
    x = 3,887,649,078.08/71,606.34
  6. Step 6: Final answer
    x = 54,291.97

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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.