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Finding the Fourth Proportional to 65,565.04, 98,345 and 18,817.90

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Solution

The fourth proportional to 65,565.04, 98,345 and 18,817.90 is: 28,226.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,565.04 : 98,345 = 18,817.90 : x
  2. Step 2: Convert to fraction form
    65,565.04/98,345 = 18,817.90/x
  3. Step 3: Cross multiply
    65,565.04x = 98,345 × 18,817.90
  4. Step 4: Simplify right side
    65,565.04x = 1,850,646,375.50
  5. Step 5: Solve for x
    x = 1,850,646,375.50/65,565.04
  6. Step 6: Final answer
    x = 28,226.12

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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.