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Finding the Fourth Proportional to 92,659.60, 138,905.16 and 48,234.16

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Solution

The fourth proportional to 92,659.60, 138,905.16 and 48,234.16 is: 72,307.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,659.60 : 138,905.16 = 48,234.16 : x
  2. Step 2: Convert to fraction form
    92,659.60/138,905.16 = 48,234.16/x
  3. Step 3: Cross multiply
    92,659.60x = 138,905.16 × 48,234.16
  4. Step 4: Simplify right side
    92,659.60x = 6,699,973,712.27
  5. Step 5: Solve for x
    x = 6,699,973,712.27/92,659.60
  6. Step 6: Final answer
    x = 72,307.39

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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.