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Finding the Fourth Proportional to 207,848.70, 311,805.72 and 67,574.52

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Solution

The fourth proportional to 207,848.70, 311,805.72 and 67,574.52 is: 101,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,848.70 : 311,805.72 = 67,574.52 : x
  2. Step 2: Convert to fraction form
    207,848.70/311,805.72 = 67,574.52/x
  3. Step 3: Cross multiply
    207,848.70x = 311,805.72 × 67,574.52
  4. Step 4: Simplify right side
    207,848.70x = 21,070,121,862.25
  5. Step 5: Solve for x
    x = 21,070,121,862.25/207,848.70
  6. Step 6: Final answer
    x = 101,372.40

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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.