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Finding the Fourth Proportional to 74,788.52, 112,169.82 and 19,384.52

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Solution

The fourth proportional to 74,788.52, 112,169.82 and 19,384.52 is: 29,073.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,788.52 : 112,169.82 = 19,384.52 : x
  2. Step 2: Convert to fraction form
    74,788.52/112,169.82 = 19,384.52/x
  3. Step 3: Cross multiply
    74,788.52x = 112,169.82 × 19,384.52
  4. Step 4: Simplify right side
    74,788.52x = 2,174,358,119.19
  5. Step 5: Solve for x
    x = 2,174,358,119.19/74,788.52
  6. Step 6: Final answer
    x = 29,073.42

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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.