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Finding the Fourth Proportional to 18,569.65, 25,624.51 and 10,912.11

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Solution

The fourth proportional to 18,569.65, 25,624.51 and 10,912.11 is: 15,057.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,569.65 : 25,624.51 = 10,912.11 : x
  2. Step 2: Convert to fraction form
    18,569.65/25,624.51 = 10,912.11/x
  3. Step 3: Cross multiply
    18,569.65x = 25,624.51 × 10,912.11
  4. Step 4: Simplify right side
    18,569.65x = 279,617,471.82
  5. Step 5: Solve for x
    x = 279,617,471.82/18,569.65
  6. Step 6: Final answer
    x = 15,057.77

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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.