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Finding the Fourth Proportional to 18,395.40, 25,390.98 and 12,022.95

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Solution

The fourth proportional to 18,395.40, 25,390.98 and 12,022.95 is: 16,595.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,395.40 : 25,390.98 = 12,022.95 : x
  2. Step 2: Convert to fraction form
    18,395.40/25,390.98 = 12,022.95/x
  3. Step 3: Cross multiply
    18,395.40x = 25,390.98 × 12,022.95
  4. Step 4: Simplify right side
    18,395.40x = 305,274,482.99
  5. Step 5: Solve for x
    x = 305,274,482.99/18,395.40
  6. Step 6: Final answer
    x = 16,595.15

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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.