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Finding the Fourth Proportional to 377,686.26, 521,206.65 and 207,920.52

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Solution

The fourth proportional to 377,686.26, 521,206.65 and 207,920.52 is: 286,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,686.26 : 521,206.65 = 207,920.52 : x
  2. Step 2: Convert to fraction form
    377,686.26/521,206.65 = 207,920.52/x
  3. Step 3: Cross multiply
    377,686.26x = 521,206.65 × 207,920.52
  4. Step 4: Simplify right side
    377,686.26x = 108,369,557,695.46
  5. Step 5: Solve for x
    x = 108,369,557,695.46/377,686.26
  6. Step 6: Final answer
    x = 286,930.10

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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.