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Finding the Fourth Proportional to 8,700.53, 11,998.82 and 7,358.95

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Solution

The fourth proportional to 8,700.53, 11,998.82 and 7,358.95 is: 10,148.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.53 : 11,998.82 = 7,358.95 : x
  2. Step 2: Convert to fraction form
    8,700.53/11,998.82 = 7,358.95/x
  3. Step 3: Cross multiply
    8,700.53x = 11,998.82 × 7,358.95
  4. Step 4: Simplify right side
    8,700.53x = 88,298,724.64
  5. Step 5: Solve for x
    x = 88,298,724.64/8,700.53
  6. Step 6: Final answer
    x = 10,148.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.