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Finding the Fourth Proportional to 18,431.01, 25,434.54 and 10,047.51

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Solution

The fourth proportional to 18,431.01, 25,434.54 and 10,047.51 is: 13,865.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.01 : 25,434.54 = 10,047.51 : x
  2. Step 2: Convert to fraction form
    18,431.01/25,434.54 = 10,047.51/x
  3. Step 3: Cross multiply
    18,431.01x = 25,434.54 × 10,047.51
  4. Step 4: Simplify right side
    18,431.01x = 255,553,795.00
  5. Step 5: Solve for x
    x = 255,553,795.00/18,431.01
  6. Step 6: Final answer
    x = 13,865.43

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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.