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Finding the Fourth Proportional to 18,139.35, 25,032.35 and 10,073.01

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Solution

The fourth proportional to 18,139.35, 25,032.35 and 10,073.01 is: 13,900.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.35 : 25,032.35 = 10,073.01 : x
  2. Step 2: Convert to fraction form
    18,139.35/25,032.35 = 10,073.01/x
  3. Step 3: Cross multiply
    18,139.35x = 25,032.35 × 10,073.01
  4. Step 4: Simplify right side
    18,139.35x = 252,151,061.51
  5. Step 5: Solve for x
    x = 252,151,061.51/18,139.35
  6. Step 6: Final answer
    x = 13,900.78

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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.