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Finding the Fourth Proportional to 385,690.72, 532,306.20 and 232,736.80

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Solution

The fourth proportional to 385,690.72, 532,306.20 and 232,736.80 is: 321,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,690.72 : 532,306.20 = 232,736.80 : x
  2. Step 2: Convert to fraction form
    385,690.72/532,306.20 = 232,736.80/x
  3. Step 3: Cross multiply
    385,690.72x = 532,306.20 × 232,736.80
  4. Step 4: Simplify right side
    385,690.72x = 123,887,241,608.16
  5. Step 5: Solve for x
    x = 123,887,241,608.16/385,690.72
  6. Step 6: Final answer
    x = 321,208.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.