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Finding the Fourth Proportional to 9,372.70, 14,059.05 and 9,307.90

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Solution

The fourth proportional to 9,372.70, 14,059.05 and 9,307.90 is: 13,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,372.70 : 14,059.05 = 9,307.90 : x
  2. Step 2: Convert to fraction form
    9,372.70/14,059.05 = 9,307.90/x
  3. Step 3: Cross multiply
    9,372.70x = 14,059.05 × 9,307.90
  4. Step 4: Simplify right side
    9,372.70x = 130,860,231.50
  5. Step 5: Solve for x
    x = 130,860,231.50/9,372.70
  6. Step 6: Final answer
    x = 13,961.85

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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.