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Finding the Fourth Proportional to 70,729.60, 97,608.72 and 38,466.40

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Solution

The fourth proportional to 70,729.60, 97,608.72 and 38,466.40 is: 53,084.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,729.60 : 97,608.72 = 38,466.40 : x
  2. Step 2: Convert to fraction form
    70,729.60/97,608.72 = 38,466.40/x
  3. Step 3: Cross multiply
    70,729.60x = 97,608.72 × 38,466.40
  4. Step 4: Simplify right side
    70,729.60x = 3,754,656,067.01
  5. Step 5: Solve for x
    x = 3,754,656,067.01/70,729.60
  6. Step 6: Final answer
    x = 53,084.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.