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Finding the Fourth Proportional to 571,891.65, 857,238.92 and 192,681.38

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Solution

The fourth proportional to 571,891.65, 857,238.92 and 192,681.38 is: 288,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,891.65 : 857,238.92 = 192,681.38 : x
  2. Step 2: Convert to fraction form
    571,891.65/857,238.92 = 192,681.38/x
  3. Step 3: Cross multiply
    571,891.65x = 857,238.92 × 192,681.38
  4. Step 4: Simplify right side
    571,891.65x = 165,173,972,845.71
  5. Step 5: Solve for x
    x = 165,173,972,845.71/571,891.65
  6. Step 6: Final answer
    x = 288,820.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.