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Finding the Fourth Proportional to 10,956.70, 16,435.05 and 6,291.10

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Solution

The fourth proportional to 10,956.70, 16,435.05 and 6,291.10 is: 9,436.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.70 : 16,435.05 = 6,291.10 : x
  2. Step 2: Convert to fraction form
    10,956.70/16,435.05 = 6,291.10/x
  3. Step 3: Cross multiply
    10,956.70x = 16,435.05 × 6,291.10
  4. Step 4: Simplify right side
    10,956.70x = 103,394,543.06
  5. Step 5: Solve for x
    x = 103,394,543.06/10,956.70
  6. Step 6: Final answer
    x = 9,436.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.