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Finding the Fourth Proportional to 389,686.38, 537,709.55 and 236,644.98

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Solution

The fourth proportional to 389,686.38, 537,709.55 and 236,644.98 is: 326,535.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,686.38 : 537,709.55 = 236,644.98 : x
  2. Step 2: Convert to fraction form
    389,686.38/537,709.55 = 236,644.98/x
  3. Step 3: Cross multiply
    389,686.38x = 537,709.55 × 236,644.98
  4. Step 4: Simplify right side
    389,686.38x = 127,246,264,522.33
  5. Step 5: Solve for x
    x = 127,246,264,522.33/389,686.38
  6. Step 6: Final answer
    x = 326,535.06

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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.