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Finding the Fourth Proportional to 418,058.50, 627,191.91 and 122,570.50

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Solution

The fourth proportional to 418,058.50, 627,191.91 and 122,570.50 is: 183,886.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,058.50 : 627,191.91 = 122,570.50 : x
  2. Step 2: Convert to fraction form
    418,058.50/627,191.91 = 122,570.50/x
  3. Step 3: Cross multiply
    418,058.50x = 627,191.91 × 122,570.50
  4. Step 4: Simplify right side
    418,058.50x = 76,875,226,004.66
  5. Step 5: Solve for x
    x = 76,875,226,004.66/418,058.50
  6. Step 6: Final answer
    x = 183,886.29

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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.