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Finding the Fourth Proportional to 48,453.60, 72,689.04 and 13,392.48

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Solution

The fourth proportional to 48,453.60, 72,689.04 and 13,392.48 is: 20,091.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,453.60 : 72,689.04 = 13,392.48 : x
  2. Step 2: Convert to fraction form
    48,453.60/72,689.04 = 13,392.48/x
  3. Step 3: Cross multiply
    48,453.60x = 72,689.04 × 13,392.48
  4. Step 4: Simplify right side
    48,453.60x = 973,486,514.42
  5. Step 5: Solve for x
    x = 973,486,514.42/48,453.60
  6. Step 6: Final answer
    x = 20,091.11

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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.