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Finding the Fourth Proportional to 18,292.64, 27,440.64 and 5,144.99

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Solution

The fourth proportional to 18,292.64, 27,440.64 and 5,144.99 is: 7,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,292.64 : 27,440.64 = 5,144.99 : x
  2. Step 2: Convert to fraction form
    18,292.64/27,440.64 = 5,144.99/x
  3. Step 3: Cross multiply
    18,292.64x = 27,440.64 × 5,144.99
  4. Step 4: Simplify right side
    18,292.64x = 141,181,681.19
  5. Step 5: Solve for x
    x = 141,181,681.19/18,292.64
  6. Step 6: Final answer
    x = 7,717.95

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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.