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Finding the Fourth Proportional to 492,261, 679,320.54 and 265,906.50

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Solution

The fourth proportional to 492,261, 679,320.54 and 265,906.50 is: 366,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,261 : 679,320.54 = 265,906.50 : x
  2. Step 2: Convert to fraction form
    492,261/679,320.54 = 265,906.50/x
  3. Step 3: Cross multiply
    492,261x = 679,320.54 × 265,906.50
  4. Step 4: Simplify right side
    492,261x = 180,635,747,169.51
  5. Step 5: Solve for x
    x = 180,635,747,169.51/492,261
  6. Step 6: Final answer
    x = 366,951.16

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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.