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Finding the Fourth Proportional to 8,726.15, 12,042.29 and 4,747.48

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Solution

The fourth proportional to 8,726.15, 12,042.29 and 4,747.48 is: 6,551.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.15 : 12,042.29 = 4,747.48 : x
  2. Step 2: Convert to fraction form
    8,726.15/12,042.29 = 4,747.48/x
  3. Step 3: Cross multiply
    8,726.15x = 12,042.29 × 4,747.48
  4. Step 4: Simplify right side
    8,726.15x = 57,170,530.93
  5. Step 5: Solve for x
    x = 57,170,530.93/8,726.15
  6. Step 6: Final answer
    x = 6,551.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.