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Finding the Fourth Proportional to 78,167.56, 117,253.53 and 48,670.60

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Solution

The fourth proportional to 78,167.56, 117,253.53 and 48,670.60 is: 73,007.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,167.56 : 117,253.53 = 48,670.60 : x
  2. Step 2: Convert to fraction form
    78,167.56/117,253.53 = 48,670.60/x
  3. Step 3: Cross multiply
    78,167.56x = 117,253.53 × 48,670.60
  4. Step 4: Simplify right side
    78,167.56x = 5,706,799,657.22
  5. Step 5: Solve for x
    x = 5,706,799,657.22/78,167.56
  6. Step 6: Final answer
    x = 73,007.26

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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.