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Finding the Fourth Proportional to 63,421.54, 87,526.71 and 35,129.86

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Solution

The fourth proportional to 63,421.54, 87,526.71 and 35,129.86 is: 48,481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,421.54 : 87,526.71 = 35,129.86 : x
  2. Step 2: Convert to fraction form
    63,421.54/87,526.71 = 35,129.86/x
  3. Step 3: Cross multiply
    63,421.54x = 87,526.71 × 35,129.86
  4. Step 4: Simplify right side
    63,421.54x = 3,074,801,068.56
  5. Step 5: Solve for x
    x = 3,074,801,068.56/63,421.54
  6. Step 6: Final answer
    x = 48,481.97

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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.