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Finding the Fourth Proportional to 18,314.51, 25,273.89 and 9,931.01

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Solution

The fourth proportional to 18,314.51, 25,273.89 and 9,931.01 is: 13,704.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314.51 : 25,273.89 = 9,931.01 : x
  2. Step 2: Convert to fraction form
    18,314.51/25,273.89 = 9,931.01/x
  3. Step 3: Cross multiply
    18,314.51x = 25,273.89 × 9,931.01
  4. Step 4: Simplify right side
    18,314.51x = 250,995,127.96
  5. Step 5: Solve for x
    x = 250,995,127.96/18,314.51
  6. Step 6: Final answer
    x = 13,704.72

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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.