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Finding the Fourth Proportional to 7,475.60, 11,213.40 and 7,360.40

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Solution

The fourth proportional to 7,475.60, 11,213.40 and 7,360.40 is: 11,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.60 : 11,213.40 = 7,360.40 : x
  2. Step 2: Convert to fraction form
    7,475.60/11,213.40 = 7,360.40/x
  3. Step 3: Cross multiply
    7,475.60x = 11,213.40 × 7,360.40
  4. Step 4: Simplify right side
    7,475.60x = 82,535,109.36
  5. Step 5: Solve for x
    x = 82,535,109.36/7,475.60
  6. Step 6: Final answer
    x = 11,040.60

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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.