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Finding the Fourth Proportional to 8,472.35, 12,702.64 and 3,726.22

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Solution

The fourth proportional to 8,472.35, 12,702.64 and 3,726.22 is: 5,586.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.35 : 12,702.64 = 3,726.22 : x
  2. Step 2: Convert to fraction form
    8,472.35/12,702.64 = 3,726.22/x
  3. Step 3: Cross multiply
    8,472.35x = 12,702.64 × 3,726.22
  4. Step 4: Simplify right side
    8,472.35x = 47,332,831.22
  5. Step 5: Solve for x
    x = 47,332,831.22/8,472.35
  6. Step 6: Final answer
    x = 5,586.74

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1.5x scale

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.