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Finding the Fourth Proportional to 58,958.39, 81,413.15 and 57,051.91

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Solution

The fourth proportional to 58,958.39, 81,413.15 and 57,051.91 is: 78,780.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,958.39 : 81,413.15 = 57,051.91 : x
  2. Step 2: Convert to fraction form
    58,958.39/81,413.15 = 57,051.91/x
  3. Step 3: Cross multiply
    58,958.39x = 81,413.15 × 57,051.91
  4. Step 4: Simplify right side
    58,958.39x = 4,644,775,706.62
  5. Step 5: Solve for x
    x = 4,644,775,706.62/58,958.39
  6. Step 6: Final answer
    x = 78,780.57

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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.