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Finding the Fourth Proportional to 7,179.93, 9,913.19 and 5,291.73

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Solution

The fourth proportional to 7,179.93, 9,913.19 and 5,291.73 is: 7,306.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.93 : 9,913.19 = 5,291.73 : x
  2. Step 2: Convert to fraction form
    7,179.93/9,913.19 = 5,291.73/x
  3. Step 3: Cross multiply
    7,179.93x = 9,913.19 × 5,291.73
  4. Step 4: Simplify right side
    7,179.93x = 52,457,898.46
  5. Step 5: Solve for x
    x = 52,457,898.46/7,179.93
  6. Step 6: Final answer
    x = 7,306.19

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.