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Finding the Fourth Proportional to 265,734,223.70, 398,601,335.55 and 74,257,999.70

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Solution

The fourth proportional to 265,734,223.70, 398,601,335.55 and 74,257,999.70 is: 111,386,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,734,223.70 : 398,601,335.55 = 74,257,999.70 : x
  2. Step 2: Convert to fraction form
    265,734,223.70/398,601,335.55 = 74,257,999.70/x
  3. Step 3: Cross multiply
    265,734,223.70x = 398,601,335.55 × 74,257,999.70
  4. Step 4: Simplify right side
    265,734,223.70x = 29,599,337,855,691,500
  5. Step 5: Solve for x
    x = 29,599,337,855,691,500/265,734,223.70
  6. Step 6: Final answer
    x = 111,386,999.55

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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.