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Finding the Fourth Proportional to 11,458.60, 17,187.90 and 7,061.80

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Solution

The fourth proportional to 11,458.60, 17,187.90 and 7,061.80 is: 10,592.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,458.60 : 17,187.90 = 7,061.80 : x
  2. Step 2: Convert to fraction form
    11,458.60/17,187.90 = 7,061.80/x
  3. Step 3: Cross multiply
    11,458.60x = 17,187.90 × 7,061.80
  4. Step 4: Simplify right side
    11,458.60x = 121,377,512.22
  5. Step 5: Solve for x
    x = 121,377,512.22/11,458.60
  6. Step 6: Final answer
    x = 10,592.70

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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.