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Finding the Fourth Proportional to 63,707.30, 87,928.26 and 42,197.30

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Solution

The fourth proportional to 63,707.30, 87,928.26 and 42,197.30 is: 58,240.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,707.30 : 87,928.26 = 42,197.30 : x
  2. Step 2: Convert to fraction form
    63,707.30/87,928.26 = 42,197.30/x
  3. Step 3: Cross multiply
    63,707.30x = 87,928.26 × 42,197.30
  4. Step 4: Simplify right side
    63,707.30x = 3,710,335,165.70
  5. Step 5: Solve for x
    x = 3,710,335,165.70/63,707.30
  6. Step 6: Final answer
    x = 58,240.35

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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.