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Finding the Fourth Proportional to 265,736,807.70, 398,605,211.55 and 222,654,657.30

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Solution

The fourth proportional to 265,736,807.70, 398,605,211.55 and 222,654,657.30 is: 333,981,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,736,807.70 : 398,605,211.55 = 222,654,657.30 : x
  2. Step 2: Convert to fraction form
    265,736,807.70/398,605,211.55 = 222,654,657.30/x
  3. Step 3: Cross multiply
    265,736,807.70x = 398,605,211.55 × 222,654,657.30
  4. Step 4: Simplify right side
    265,736,807.70x = 88,751,306,775,659,264
  5. Step 5: Solve for x
    x = 88,751,306,775,659,264/265,736,807.70
  6. Step 6: Final answer
    x = 333,981,985.95

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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.