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Finding the Fourth Proportional to 78,561.60, 117,842.40 and 41,697.60

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Solution

The fourth proportional to 78,561.60, 117,842.40 and 41,697.60 is: 62,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,561.60 : 117,842.40 = 41,697.60 : x
  2. Step 2: Convert to fraction form
    78,561.60/117,842.40 = 41,697.60/x
  3. Step 3: Cross multiply
    78,561.60x = 117,842.40 × 41,697.60
  4. Step 4: Simplify right side
    78,561.60x = 4,913,745,258.24
  5. Step 5: Solve for x
    x = 4,913,745,258.24/78,561.60
  6. Step 6: Final answer
    x = 62,546.40

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