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Finding the Fourth Proportional to 9,349.60, 12,958.17 and 9,174.64

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Solution

The fourth proportional to 9,349.60, 12,958.17 and 9,174.64 is: 12,715.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,349.60 : 12,958.17 = 9,174.64 : x
  2. Step 2: Convert to fraction form
    9,349.60/12,958.17 = 9,174.64/x
  3. Step 3: Cross multiply
    9,349.60x = 12,958.17 × 9,174.64
  4. Step 4: Simplify right side
    9,349.60x = 118,886,544.81
  5. Step 5: Solve for x
    x = 118,886,544.81/9,349.60
  6. Step 6: Final answer
    x = 12,715.68

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.