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Finding the Fourth Proportional to 7,371.40, 11,037.90 and 7,025.80

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Solution

The fourth proportional to 7,371.40, 11,037.90 and 7,025.80 is: 10,520.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,371.40 : 11,037.90 = 7,025.80 : x
  2. Step 2: Convert to fraction form
    7,371.40/11,037.90 = 7,025.80/x
  3. Step 3: Cross multiply
    7,371.40x = 11,037.90 × 7,025.80
  4. Step 4: Simplify right side
    7,371.40x = 77,550,077.82
  5. Step 5: Solve for x
    x = 77,550,077.82/7,371.40
  6. Step 6: Final answer
    x = 10,520.40

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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.