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Finding the Fourth Proportional to 74,877.48, 111,830.76 and 67,843.44

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Solution

The fourth proportional to 74,877.48, 111,830.76 and 67,843.44 is: 101,325.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,877.48 : 111,830.76 = 67,843.44 : x
  2. Step 2: Convert to fraction form
    74,877.48/111,830.76 = 67,843.44/x
  3. Step 3: Cross multiply
    74,877.48x = 111,830.76 × 67,843.44
  4. Step 4: Simplify right side
    74,877.48x = 7,586,983,456.21
  5. Step 5: Solve for x
    x = 7,586,983,456.21/74,877.48
  6. Step 6: Final answer
    x = 101,325.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.