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Finding the Fourth Proportional to 75,294.72, 112,919.04 and 28,554.24

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Solution

The fourth proportional to 75,294.72, 112,919.04 and 28,554.24 is: 42,822.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,294.72 : 112,919.04 = 28,554.24 : x
  2. Step 2: Convert to fraction form
    75,294.72/112,919.04 = 28,554.24/x
  3. Step 3: Cross multiply
    75,294.72x = 112,919.04 × 28,554.24
  4. Step 4: Simplify right side
    75,294.72x = 3,224,317,368.73
  5. Step 5: Solve for x
    x = 3,224,317,368.73/75,294.72
  6. Step 6: Final answer
    x = 42,822.62

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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.