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Finding the Fourth Proportional to 63,789.87, 95,681.29 and 19,413.16

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Solution

The fourth proportional to 63,789.87, 95,681.29 and 19,413.16 is: 29,118.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,789.87 : 95,681.29 = 19,413.16 : x
  2. Step 2: Convert to fraction form
    63,789.87/95,681.29 = 19,413.16/x
  3. Step 3: Cross multiply
    63,789.87x = 95,681.29 × 19,413.16
  4. Step 4: Simplify right side
    63,789.87x = 1,857,476,191.78
  5. Step 5: Solve for x
    x = 1,857,476,191.78/63,789.87
  6. Step 6: Final answer
    x = 29,118.67

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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.