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Finding the Fourth Proportional to 418,216.84, 627,325.77 and 114,613.51

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Solution

The fourth proportional to 418,216.84, 627,325.77 and 114,613.51 is: 171,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,216.84 : 627,325.77 = 114,613.51 : x
  2. Step 2: Convert to fraction form
    418,216.84/627,325.77 = 114,613.51/x
  3. Step 3: Cross multiply
    418,216.84x = 627,325.77 × 114,613.51
  4. Step 4: Simplify right side
    418,216.84x = 71,900,008,413.15
  5. Step 5: Solve for x
    x = 71,900,008,413.15/418,216.84
  6. Step 6: Final answer
    x = 171,920.40

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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.