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Finding the Fourth Proportional to 92,413.70, 138,620.55 and 73,386.80

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Solution

The fourth proportional to 92,413.70, 138,620.55 and 73,386.80 is: 110,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,413.70 : 138,620.55 = 73,386.80 : x
  2. Step 2: Convert to fraction form
    92,413.70/138,620.55 = 73,386.80/x
  3. Step 3: Cross multiply
    92,413.70x = 138,620.55 × 73,386.80
  4. Step 4: Simplify right side
    92,413.70x = 10,172,918,578.74
  5. Step 5: Solve for x
    x = 10,172,918,578.74/92,413.70
  6. Step 6: Final answer
    x = 110,080.20

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1.5x scale

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.