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Finding the Fourth Proportional to 63,411.39, 87,424.74 and 54,554.04

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Solution

The fourth proportional to 63,411.39, 87,424.74 and 54,554.04 is: 75,213.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,411.39 : 87,424.74 = 54,554.04 : x
  2. Step 2: Convert to fraction form
    63,411.39/87,424.74 = 54,554.04/x
  3. Step 3: Cross multiply
    63,411.39x = 87,424.74 × 54,554.04
  4. Step 4: Simplify right side
    63,411.39x = 4,769,372,762.95
  5. Step 5: Solve for x
    x = 4,769,372,762.95/63,411.39
  6. Step 6: Final answer
    x = 75,213.19

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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.