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Finding the Fourth Proportional to 48,645.04, 72,971.70 and 15,356.20

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Solution

The fourth proportional to 48,645.04, 72,971.70 and 15,356.20 is: 23,035.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,645.04 : 72,971.70 = 15,356.20 : x
  2. Step 2: Convert to fraction form
    48,645.04/72,971.70 = 15,356.20/x
  3. Step 3: Cross multiply
    48,645.04x = 72,971.70 × 15,356.20
  4. Step 4: Simplify right side
    48,645.04x = 1,120,568,019.54
  5. Step 5: Solve for x
    x = 1,120,568,019.54/48,645.04
  6. Step 6: Final answer
    x = 23,035.61

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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.