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Finding the Fourth Proportional to 56,712.33, 85,062.02 and 15,162.57

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Solution

The fourth proportional to 56,712.33, 85,062.02 and 15,162.57 is: 22,742.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,712.33 : 85,062.02 = 15,162.57 : x
  2. Step 2: Convert to fraction form
    56,712.33/85,062.02 = 15,162.57/x
  3. Step 3: Cross multiply
    56,712.33x = 85,062.02 × 15,162.57
  4. Step 4: Simplify right side
    56,712.33x = 1,289,759,161.05
  5. Step 5: Solve for x
    x = 1,289,759,161.05/56,712.33
  6. Step 6: Final answer
    x = 22,742.13

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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.