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Finding the Fourth Proportional to 411,858.29, 568,432.45 and 282,690.65

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Solution

The fourth proportional to 411,858.29, 568,432.45 and 282,690.65 is: 390,159.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,858.29 : 568,432.45 = 282,690.65 : x
  2. Step 2: Convert to fraction form
    411,858.29/568,432.45 = 282,690.65/x
  3. Step 3: Cross multiply
    411,858.29x = 568,432.45 × 282,690.65
  4. Step 4: Simplify right side
    411,858.29x = 160,690,539,485.95
  5. Step 5: Solve for x
    x = 160,690,539,485.95/411,858.29
  6. Step 6: Final answer
    x = 390,159.78

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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.