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Finding the Fourth Proportional to 492,211.69, 679,252.58 and 265,857.19

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Solution

The fourth proportional to 492,211.69, 679,252.58 and 265,857.19 is: 366,883.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,211.69 : 679,252.58 = 265,857.19 : x
  2. Step 2: Convert to fraction form
    492,211.69/679,252.58 = 265,857.19/x
  3. Step 3: Cross multiply
    492,211.69x = 679,252.58 × 265,857.19
  4. Step 4: Simplify right side
    492,211.69x = 180,584,181,684.04
  5. Step 5: Solve for x
    x = 180,584,181,684.04/492,211.69
  6. Step 6: Final answer
    x = 366,883.16

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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.