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Finding the Fourth Proportional to 269,275.70, 403,913.55 and 91,982.90

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Solution

The fourth proportional to 269,275.70, 403,913.55 and 91,982.90 is: 137,974.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,275.70 : 403,913.55 = 91,982.90 : x
  2. Step 2: Convert to fraction form
    269,275.70/403,913.55 = 91,982.90/x
  3. Step 3: Cross multiply
    269,275.70x = 403,913.55 × 91,982.90
  4. Step 4: Simplify right side
    269,275.70x = 37,153,139,678.30
  5. Step 5: Solve for x
    x = 37,153,139,678.30/269,275.70
  6. Step 6: Final answer
    x = 137,974.35

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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.