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Finding the Fourth Proportional to 63,187.16, 87,239.23 and 39,323.48

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Solution

The fourth proportional to 63,187.16, 87,239.23 and 39,323.48 is: 54,291.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,187.16 : 87,239.23 = 39,323.48 : x
  2. Step 2: Convert to fraction form
    63,187.16/87,239.23 = 39,323.48/x
  3. Step 3: Cross multiply
    63,187.16x = 87,239.23 × 39,323.48
  4. Step 4: Simplify right side
    63,187.16x = 3,430,549,581.62
  5. Step 5: Solve for x
    x = 3,430,549,581.62/63,187.16
  6. Step 6: Final answer
    x = 54,291.88

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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.