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Finding the Fourth Proportional to 63,048.72, 87,047.76 and 39,207.84

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Solution

The fourth proportional to 63,048.72, 87,047.76 and 39,207.84 is: 54,132.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,048.72 : 87,047.76 = 39,207.84 : x
  2. Step 2: Convert to fraction form
    63,048.72/87,047.76 = 39,207.84/x
  3. Step 3: Cross multiply
    63,048.72x = 87,047.76 × 39,207.84
  4. Step 4: Simplify right side
    63,048.72x = 3,412,954,646.44
  5. Step 5: Solve for x
    x = 3,412,954,646.44/63,048.72
  6. Step 6: Final answer
    x = 54,132.02

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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.