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Finding the Fourth Proportional to 78,392.91, 117,597.15 and 25,071.50

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Solution

The fourth proportional to 78,392.91, 117,597.15 and 25,071.50 is: 37,609.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,392.91 : 117,597.15 = 25,071.50 : x
  2. Step 2: Convert to fraction form
    78,392.91/117,597.15 = 25,071.50/x
  3. Step 3: Cross multiply
    78,392.91x = 117,597.15 × 25,071.50
  4. Step 4: Simplify right side
    78,392.91x = 2,948,336,358.24
  5. Step 5: Solve for x
    x = 2,948,336,358.24/78,392.91
  6. Step 6: Final answer
    x = 37,609.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.