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Finding the Fourth Proportional to 22,185.30, 30,616.95 and 12,114.68

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Solution

The fourth proportional to 22,185.30, 30,616.95 and 12,114.68 is: 16,718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,185.30 : 30,616.95 = 12,114.68 : x
  2. Step 2: Convert to fraction form
    22,185.30/30,616.95 = 12,114.68/x
  3. Step 3: Cross multiply
    22,185.30x = 30,616.95 × 12,114.68
  4. Step 4: Simplify right side
    22,185.30x = 370,914,444.17
  5. Step 5: Solve for x
    x = 370,914,444.17/22,185.30
  6. Step 6: Final answer
    x = 16,718.93

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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.