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Finding the Fourth Proportional to 12,199.68, 18,299.52 and 7,007.04

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Solution

The fourth proportional to 12,199.68, 18,299.52 and 7,007.04 is: 10,510.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,199.68 : 18,299.52 = 7,007.04 : x
  2. Step 2: Convert to fraction form
    12,199.68/18,299.52 = 7,007.04/x
  3. Step 3: Cross multiply
    12,199.68x = 18,299.52 × 7,007.04
  4. Step 4: Simplify right side
    12,199.68x = 128,225,468.62
  5. Step 5: Solve for x
    x = 128,225,468.62/12,199.68
  6. Step 6: Final answer
    x = 10,510.56

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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.