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Finding the Fourth Proportional to 418,772.90, 628,159.35 and 250,811.30

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Solution

The fourth proportional to 418,772.90, 628,159.35 and 250,811.30 is: 376,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,772.90 : 628,159.35 = 250,811.30 : x
  2. Step 2: Convert to fraction form
    418,772.90/628,159.35 = 250,811.30/x
  3. Step 3: Cross multiply
    418,772.90x = 628,159.35 × 250,811.30
  4. Step 4: Simplify right side
    418,772.90x = 157,549,463,180.66
  5. Step 5: Solve for x
    x = 157,549,463,180.66/418,772.90
  6. Step 6: Final answer
    x = 376,216.95

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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.