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Finding the Fourth Proportional to 266,772,353.70, 400,158,530.55 and 221,422,721.70

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Solution

The fourth proportional to 266,772,353.70, 400,158,530.55 and 221,422,721.70 is: 332,134,082.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,772,353.70 : 400,158,530.55 = 221,422,721.70 : x
  2. Step 2: Convert to fraction form
    266,772,353.70/400,158,530.55 = 221,422,721.70/x
  3. Step 3: Cross multiply
    266,772,353.70x = 400,158,530.55 × 221,422,721.70
  4. Step 4: Simplify right side
    266,772,353.70x = 88,604,190,945,853,600
  5. Step 5: Solve for x
    x = 88,604,190,945,853,600/266,772,353.70
  6. Step 6: Final answer
    x = 332,134,082.55

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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.