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Finding the Fourth Proportional to 9,153.28, 12,630.36 and 5,965.12

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Solution

The fourth proportional to 9,153.28, 12,630.36 and 5,965.12 is: 8,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,153.28 : 12,630.36 = 5,965.12 : x
  2. Step 2: Convert to fraction form
    9,153.28/12,630.36 = 5,965.12/x
  3. Step 3: Cross multiply
    9,153.28x = 12,630.36 × 5,965.12
  4. Step 4: Simplify right side
    9,153.28x = 75,341,613.04
  5. Step 5: Solve for x
    x = 75,341,613.04/9,153.28
  6. Step 6: Final answer
    x = 8,231.11

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Half scale
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Double scale
Find fourth proportional to 9,154.28, 12,631.74 and 5,966.12
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.