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Finding the Fourth Proportional to 492,615.42, 679,810.31 and 266,260.92

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Solution

The fourth proportional to 492,615.42, 679,810.31 and 266,260.92 is: 367,440.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,615.42 : 679,810.31 = 266,260.92 : x
  2. Step 2: Convert to fraction form
    492,615.42/679,810.31 = 266,260.92/x
  3. Step 3: Cross multiply
    492,615.42x = 679,810.31 × 266,260.92
  4. Step 4: Simplify right side
    492,615.42x = 181,006,917,234.78
  5. Step 5: Solve for x
    x = 181,006,917,234.78/492,615.42
  6. Step 6: Final answer
    x = 367,440.62

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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.