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Finding the Fourth Proportional to 73,403.20, 110,104.80 and 57,656.80

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Solution

The fourth proportional to 73,403.20, 110,104.80 and 57,656.80 is: 86,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,403.20 : 110,104.80 = 57,656.80 : x
  2. Step 2: Convert to fraction form
    73,403.20/110,104.80 = 57,656.80/x
  3. Step 3: Cross multiply
    73,403.20x = 110,104.80 × 57,656.80
  4. Step 4: Simplify right side
    73,403.20x = 6,348,290,432.64
  5. Step 5: Solve for x
    x = 6,348,290,432.64/73,403.20
  6. Step 6: Final answer
    x = 86,485.20

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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.