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Finding the Fourth Proportional to 48,646.85, 72,987.89 and 19,084.88

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Solution

The fourth proportional to 48,646.85, 72,987.89 and 19,084.88 is: 28,634.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,646.85 : 72,987.89 = 19,084.88 : x
  2. Step 2: Convert to fraction form
    48,646.85/72,987.89 = 19,084.88/x
  3. Step 3: Cross multiply
    48,646.85x = 72,987.89 × 19,084.88
  4. Step 4: Simplify right side
    48,646.85x = 1,392,965,209.15
  5. Step 5: Solve for x
    x = 1,392,965,209.15/48,646.85
  6. Step 6: Final answer
    x = 28,634.24

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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.