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Finding the Fourth Proportional to 18,321.66, 25,283.88 and 10,363.72

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Solution

The fourth proportional to 18,321.66, 25,283.88 and 10,363.72 is: 14,301.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.66 : 25,283.88 = 10,363.72 : x
  2. Step 2: Convert to fraction form
    18,321.66/25,283.88 = 10,363.72/x
  3. Step 3: Cross multiply
    18,321.66x = 25,283.88 × 10,363.72
  4. Step 4: Simplify right side
    18,321.66x = 262,035,052.83
  5. Step 5: Solve for x
    x = 262,035,052.83/18,321.66
  6. Step 6: Final answer
    x = 14,301.93

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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.