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Finding the Fourth Proportional to 8,674.16, 11,962.47 and 5,688.92

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Solution

The fourth proportional to 8,674.16, 11,962.47 and 5,688.92 is: 7,845.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.16 : 11,962.47 = 5,688.92 : x
  2. Step 2: Convert to fraction form
    8,674.16/11,962.47 = 5,688.92/x
  3. Step 3: Cross multiply
    8,674.16x = 11,962.47 × 5,688.92
  4. Step 4: Simplify right side
    8,674.16x = 68,053,534.83
  5. Step 5: Solve for x
    x = 68,053,534.83/8,674.16
  6. Step 6: Final answer
    x = 7,845.55

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Half scale
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Similar ratio
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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.