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Finding the Fourth Proportional to 18,575.78, 27,863.33 and 7,482.18

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Solution

The fourth proportional to 18,575.78, 27,863.33 and 7,482.18 is: 11,223.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.78 : 27,863.33 = 7,482.18 : x
  2. Step 2: Convert to fraction form
    18,575.78/27,863.33 = 7,482.18/x
  3. Step 3: Cross multiply
    18,575.78x = 27,863.33 × 7,482.18
  4. Step 4: Simplify right side
    18,575.78x = 208,478,413.05
  5. Step 5: Solve for x
    x = 208,478,413.05/18,575.78
  6. Step 6: Final answer
    x = 11,223.13

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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.