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Finding the Fourth Proportional to 18,490.01, 25,500.49 and 15,632.67

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Solution

The fourth proportional to 18,490.01, 25,500.49 and 15,632.67 is: 21,559.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.01 : 25,500.49 = 15,632.67 : x
  2. Step 2: Convert to fraction form
    18,490.01/25,500.49 = 15,632.67/x
  3. Step 3: Cross multiply
    18,490.01x = 25,500.49 × 15,632.67
  4. Step 4: Simplify right side
    18,490.01x = 398,640,681.26
  5. Step 5: Solve for x
    x = 398,640,681.26/18,490.01
  6. Step 6: Final answer
    x = 21,559.79

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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.