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Finding the Fourth Proportional to 7,501.70, 11,265.88 and 7,118.84

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Solution

The fourth proportional to 7,501.70, 11,265.88 and 7,118.84 is: 10,690.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,501.70 : 11,265.88 = 7,118.84 : x
  2. Step 2: Convert to fraction form
    7,501.70/11,265.88 = 7,118.84/x
  3. Step 3: Cross multiply
    7,501.70x = 11,265.88 × 7,118.84
  4. Step 4: Simplify right side
    7,501.70x = 80,199,997.18
  5. Step 5: Solve for x
    x = 80,199,997.18/7,501.70
  6. Step 6: Final answer
    x = 10,690.91

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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.