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Finding the Fourth Proportional to 18,423.66, 25,424.76 and 10,040.16

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Solution

The fourth proportional to 18,423.66, 25,424.76 and 10,040.16 is: 13,855.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.66 : 25,424.76 = 10,040.16 : x
  2. Step 2: Convert to fraction form
    18,423.66/25,424.76 = 10,040.16/x
  3. Step 3: Cross multiply
    18,423.66x = 25,424.76 × 10,040.16
  4. Step 4: Simplify right side
    18,423.66x = 255,268,658.36
  5. Step 5: Solve for x
    x = 255,268,658.36/18,423.66
  6. Step 6: Final answer
    x = 13,855.48

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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.