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Finding the Fourth Proportional to 48,157.20, 72,214.20 and 18,565.20

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Solution

The fourth proportional to 48,157.20, 72,214.20 and 18,565.20 is: 27,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,157.20 : 72,214.20 = 18,565.20 : x
  2. Step 2: Convert to fraction form
    48,157.20/72,214.20 = 18,565.20/x
  3. Step 3: Cross multiply
    48,157.20x = 72,214.20 × 18,565.20
  4. Step 4: Simplify right side
    48,157.20x = 1,340,671,065.84
  5. Step 5: Solve for x
    x = 1,340,671,065.84/48,157.20
  6. Step 6: Final answer
    x = 27,839.47

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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.