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Finding the Fourth Proportional to 75,902.30, 113,922.30 and 38,488.40

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Solution

The fourth proportional to 75,902.30, 113,922.30 and 38,488.40 is: 57,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,902.30 : 113,922.30 = 38,488.40 : x
  2. Step 2: Convert to fraction form
    75,902.30/113,922.30 = 38,488.40/x
  3. Step 3: Cross multiply
    75,902.30x = 113,922.30 × 38,488.40
  4. Step 4: Simplify right side
    75,902.30x = 4,384,687,051.32
  5. Step 5: Solve for x
    x = 4,384,687,051.32/75,902.30
  6. Step 6: Final answer
    x = 57,767.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.