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Finding the Fourth Proportional to 73,565.20, 110,347.80 and 65,400.40

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Solution

The fourth proportional to 73,565.20, 110,347.80 and 65,400.40 is: 98,100.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,565.20 : 110,347.80 = 65,400.40 : x
  2. Step 2: Convert to fraction form
    73,565.20/110,347.80 = 65,400.40/x
  3. Step 3: Cross multiply
    73,565.20x = 110,347.80 × 65,400.40
  4. Step 4: Simplify right side
    73,565.20x = 7,216,790,259.12
  5. Step 5: Solve for x
    x = 7,216,790,259.12/73,565.20
  6. Step 6: Final answer
    x = 98,100.60

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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.