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Finding the Fourth Proportional to 6,275.32, 8,658.70 and 3,722.61

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Solution

The fourth proportional to 6,275.32, 8,658.70 and 3,722.61 is: 5,136.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,275.32 : 8,658.70 = 3,722.61 : x
  2. Step 2: Convert to fraction form
    6,275.32/8,658.70 = 3,722.61/x
  3. Step 3: Cross multiply
    6,275.32x = 8,658.70 × 3,722.61
  4. Step 4: Simplify right side
    6,275.32x = 32,232,901.30
  5. Step 5: Solve for x
    x = 32,232,901.30/6,275.32
  6. Step 6: Final answer
    x = 5,136.46

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Half scale
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Double scale
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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.