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Finding the Fourth Proportional to 61,233.60, 91,720.80 and 48,014.40

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Solution

The fourth proportional to 61,233.60, 91,720.80 and 48,014.40 is: 71,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,233.60 : 91,720.80 = 48,014.40 : x
  2. Step 2: Convert to fraction form
    61,233.60/91,720.80 = 48,014.40/x
  3. Step 3: Cross multiply
    61,233.60x = 91,720.80 × 48,014.40
  4. Step 4: Simplify right side
    61,233.60x = 4,403,919,179.52
  5. Step 5: Solve for x
    x = 4,403,919,179.52/61,233.60
  6. Step 6: Final answer
    x = 71,919.98

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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.