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Finding the Fourth Proportional to 7,318.62, 10,099.98 and 4,174.74

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Solution

The fourth proportional to 7,318.62, 10,099.98 and 4,174.74 is: 5,761.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.62 : 10,099.98 = 4,174.74 : x
  2. Step 2: Convert to fraction form
    7,318.62/10,099.98 = 4,174.74/x
  3. Step 3: Cross multiply
    7,318.62x = 10,099.98 × 4,174.74
  4. Step 4: Simplify right side
    7,318.62x = 42,164,790.51
  5. Step 5: Solve for x
    x = 42,164,790.51/7,318.62
  6. Step 6: Final answer
    x = 5,761.30

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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.