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Finding the Fourth Proportional to 71,246.65, 98,319.94 and 39,414.87

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Solution

The fourth proportional to 71,246.65, 98,319.94 and 39,414.87 is: 54,392.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,246.65 : 98,319.94 = 39,414.87 : x
  2. Step 2: Convert to fraction form
    71,246.65/98,319.94 = 39,414.87/x
  3. Step 3: Cross multiply
    71,246.65x = 98,319.94 × 39,414.87
  4. Step 4: Simplify right side
    71,246.65x = 3,875,267,653.51
  5. Step 5: Solve for x
    x = 3,875,267,653.51/71,246.65
  6. Step 6: Final answer
    x = 54,392.28

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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.