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Finding the Fourth Proportional to 56,952.48, 85,413.72 and 39,179.40

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Solution

The fourth proportional to 56,952.48, 85,413.72 and 39,179.40 is: 58,758.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,952.48 : 85,413.72 = 39,179.40 : x
  2. Step 2: Convert to fraction form
    56,952.48/85,413.72 = 39,179.40/x
  3. Step 3: Cross multiply
    56,952.48x = 85,413.72 × 39,179.40
  4. Step 4: Simplify right side
    56,952.48x = 3,346,458,301.37
  5. Step 5: Solve for x
    x = 3,346,458,301.37/56,952.48
  6. Step 6: Final answer
    x = 58,758.78

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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.