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Finding the Fourth Proportional to 7,632.70, 11,449.05 and 7,000.90

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Solution

The fourth proportional to 7,632.70, 11,449.05 and 7,000.90 is: 10,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,632.70 : 11,449.05 = 7,000.90 : x
  2. Step 2: Convert to fraction form
    7,632.70/11,449.05 = 7,000.90/x
  3. Step 3: Cross multiply
    7,632.70x = 11,449.05 × 7,000.90
  4. Step 4: Simplify right side
    7,632.70x = 80,153,654.15
  5. Step 5: Solve for x
    x = 80,153,654.15/7,632.70
  6. Step 6: Final answer
    x = 10,501.35

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Half scale
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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.