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Finding the Fourth Proportional to 78,596.32, 108,430.86 and 48,372.52

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Solution

The fourth proportional to 78,596.32, 108,430.86 and 48,372.52 is: 66,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,596.32 : 108,430.86 = 48,372.52 : x
  2. Step 2: Convert to fraction form
    78,596.32/108,430.86 = 48,372.52/x
  3. Step 3: Cross multiply
    78,596.32x = 108,430.86 × 48,372.52
  4. Step 4: Simplify right side
    78,596.32x = 5,245,073,943.97
  5. Step 5: Solve for x
    x = 5,245,073,943.97/78,596.32
  6. Step 6: Final answer
    x = 66,734.35

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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.