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Finding the Fourth Proportional to 389,686.88, 537,710.24 and 236,645.48

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Solution

The fourth proportional to 389,686.88, 537,710.24 and 236,645.48 is: 326,535.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,686.88 : 537,710.24 = 236,645.48 : x
  2. Step 2: Convert to fraction form
    389,686.88/537,710.24 = 236,645.48/x
  3. Step 3: Cross multiply
    389,686.88x = 537,710.24 × 236,645.48
  4. Step 4: Simplify right side
    389,686.88x = 127,246,696,662.49
  5. Step 5: Solve for x
    x = 127,246,696,662.49/389,686.88
  6. Step 6: Final answer
    x = 326,535.75

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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.