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Finding the Fourth Proportional to 8,693.80, 11,992.02 and 5,154.52

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Solution

The fourth proportional to 8,693.80, 11,992.02 and 5,154.52 is: 7,110.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.80 : 11,992.02 = 5,154.52 : x
  2. Step 2: Convert to fraction form
    8,693.80/11,992.02 = 5,154.52/x
  3. Step 3: Cross multiply
    8,693.80x = 11,992.02 × 5,154.52
  4. Step 4: Simplify right side
    8,693.80x = 61,813,106.93
  5. Step 5: Solve for x
    x = 61,813,106.93/8,693.80
  6. Step 6: Final answer
    x = 7,110.02

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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.