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Finding the Fourth Proportional to 86,531.64, 119,413.57 and 48,805.89

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Solution

The fourth proportional to 86,531.64, 119,413.57 and 48,805.89 is: 67,352.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,531.64 : 119,413.57 = 48,805.89 : x
  2. Step 2: Convert to fraction form
    86,531.64/119,413.57 = 48,805.89/x
  3. Step 3: Cross multiply
    86,531.64x = 119,413.57 × 48,805.89
  4. Step 4: Simplify right side
    86,531.64x = 5,828,085,561.93
  5. Step 5: Solve for x
    x = 5,828,085,561.93/86,531.64
  6. Step 6: Final answer
    x = 67,352.08

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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.