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Finding the Fourth Proportional to 467,714,866.93, 644,781,125.55 and 318,844,945.87

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Solution

The fourth proportional to 467,714,866.93, 644,781,125.55 and 318,844,945.87 is: 439,552,423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,714,866.93 : 644,781,125.55 = 318,844,945.87 : x
  2. Step 2: Convert to fraction form
    467,714,866.93/644,781,125.55 = 318,844,945.87/x
  3. Step 3: Cross multiply
    467,714,866.93x = 644,781,125.55 × 318,844,945.87
  4. Step 4: Simplify right side
    467,714,866.93x = 205,585,203,073,987,424
  5. Step 5: Solve for x
    x = 205,585,203,073,987,424/467,714,866.93
  6. Step 6: Final answer
    x = 439,552,423.09

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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.