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Finding the Fourth Proportional to 338,781.40, 467,515.14 and 185,816.45

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Solution

The fourth proportional to 338,781.40, 467,515.14 and 185,816.45 is: 256,424.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,781.40 : 467,515.14 = 185,816.45 : x
  2. Step 2: Convert to fraction form
    338,781.40/467,515.14 = 185,816.45/x
  3. Step 3: Cross multiply
    338,781.40x = 467,515.14 × 185,816.45
  4. Step 4: Simplify right side
    338,781.40x = 86,872,003,636.05
  5. Step 5: Solve for x
    x = 86,872,003,636.05/338,781.40
  6. Step 6: Final answer
    x = 256,424.95

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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.