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Finding the Fourth Proportional to 70,877.18, 106,357.62 and 25,894.54

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Solution

The fourth proportional to 70,877.18, 106,357.62 and 25,894.54 is: 38,857.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,877.18 : 106,357.62 = 25,894.54 : x
  2. Step 2: Convert to fraction form
    70,877.18/106,357.62 = 25,894.54/x
  3. Step 3: Cross multiply
    70,877.18x = 106,357.62 × 25,894.54
  4. Step 4: Simplify right side
    70,877.18x = 2,754,081,113.61
  5. Step 5: Solve for x
    x = 2,754,081,113.61/70,877.18
  6. Step 6: Final answer
    x = 38,857.09

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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.