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Finding the Fourth Proportional to 22,986.80, 34,486.20 and 7,404.80

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Solution

The fourth proportional to 22,986.80, 34,486.20 and 7,404.80 is: 11,109.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,986.80 : 34,486.20 = 7,404.80 : x
  2. Step 2: Convert to fraction form
    22,986.80/34,486.20 = 7,404.80/x
  3. Step 3: Cross multiply
    22,986.80x = 34,486.20 × 7,404.80
  4. Step 4: Simplify right side
    22,986.80x = 255,363,413.76
  5. Step 5: Solve for x
    x = 255,363,413.76/22,986.80
  6. Step 6: Final answer
    x = 11,109.13

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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.