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Finding the Fourth Proportional to 7,809.60, 11,658.75 and 7,536.24

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Solution

The fourth proportional to 7,809.60, 11,658.75 and 7,536.24 is: 11,250.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.60 : 11,658.75 = 7,536.24 : x
  2. Step 2: Convert to fraction form
    7,809.60/11,658.75 = 7,536.24/x
  3. Step 3: Cross multiply
    7,809.60x = 11,658.75 × 7,536.24
  4. Step 4: Simplify right side
    7,809.60x = 87,863,138.10
  5. Step 5: Solve for x
    x = 87,863,138.10/7,809.60
  6. Step 6: Final answer
    x = 11,250.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.