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Finding the Fourth Proportional to 19,138.62, 26,413.47 and 12,064.62

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Solution

The fourth proportional to 19,138.62, 26,413.47 and 12,064.62 is: 16,650.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.62 : 26,413.47 = 12,064.62 : x
  2. Step 2: Convert to fraction form
    19,138.62/26,413.47 = 12,064.62/x
  3. Step 3: Cross multiply
    19,138.62x = 26,413.47 × 12,064.62
  4. Step 4: Simplify right side
    19,138.62x = 318,668,478.43
  5. Step 5: Solve for x
    x = 318,668,478.43/19,138.62
  6. Step 6: Final answer
    x = 16,650.55

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1.5x scale

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.