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Finding the Fourth Proportional to 8,700.91, 13,036.78 and 4,793.47

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Solution

The fourth proportional to 8,700.91, 13,036.78 and 4,793.47 is: 7,182.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.91 : 13,036.78 = 4,793.47 : x
  2. Step 2: Convert to fraction form
    8,700.91/13,036.78 = 4,793.47/x
  3. Step 3: Cross multiply
    8,700.91x = 13,036.78 × 4,793.47
  4. Step 4: Simplify right side
    8,700.91x = 62,491,413.83
  5. Step 5: Solve for x
    x = 62,491,413.83/8,700.91
  6. Step 6: Final answer
    x = 7,182.17

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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.