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Finding the Fourth Proportional to 18,314.52, 25,274.31 and 9,931.02

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Solution

The fourth proportional to 18,314.52, 25,274.31 and 9,931.02 is: 13,704.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314.52 : 25,274.31 = 9,931.02 : x
  2. Step 2: Convert to fraction form
    18,314.52/25,274.31 = 9,931.02/x
  3. Step 3: Cross multiply
    18,314.52x = 25,274.31 × 9,931.02
  4. Step 4: Simplify right side
    18,314.52x = 250,999,678.10
  5. Step 5: Solve for x
    x = 250,999,678.10/18,314.52
  6. Step 6: Final answer
    x = 13,704.96

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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.