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Finding the Fourth Proportional to 18,443.95, 27,665.93 and 7,907.13

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Solution

The fourth proportional to 18,443.95, 27,665.93 and 7,907.13 is: 11,860.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443.95 : 27,665.93 = 7,907.13 : x
  2. Step 2: Convert to fraction form
    18,443.95/27,665.93 = 7,907.13/x
  3. Step 3: Cross multiply
    18,443.95x = 27,665.93 × 7,907.13
  4. Step 4: Simplify right side
    18,443.95x = 218,758,124.85
  5. Step 5: Solve for x
    x = 218,758,124.85/18,443.95
  6. Step 6: Final answer
    x = 11,860.70

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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.