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Finding the Fourth Proportional to 52,940.81, 79,413.38 and 13,498.95

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Solution

The fourth proportional to 52,940.81, 79,413.38 and 13,498.95 is: 20,248.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,940.81 : 79,413.38 = 13,498.95 : x
  2. Step 2: Convert to fraction form
    52,940.81/79,413.38 = 13,498.95/x
  3. Step 3: Cross multiply
    52,940.81x = 79,413.38 × 13,498.95
  4. Step 4: Simplify right side
    52,940.81x = 1,071,997,526.88
  5. Step 5: Solve for x
    x = 1,071,997,526.88/52,940.81
  6. Step 6: Final answer
    x = 20,248.98

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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.