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Finding the Fourth Proportional to 354,673.20, 532,058.40 and 117,991.20

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Solution

The fourth proportional to 354,673.20, 532,058.40 and 117,991.20 is: 177,002.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,673.20 : 532,058.40 = 117,991.20 : x
  2. Step 2: Convert to fraction form
    354,673.20/532,058.40 = 117,991.20/x
  3. Step 3: Cross multiply
    354,673.20x = 532,058.40 × 117,991.20
  4. Step 4: Simplify right side
    354,673.20x = 62,778,209,086.08
  5. Step 5: Solve for x
    x = 62,778,209,086.08/354,673.20
  6. Step 6: Final answer
    x = 177,002.97

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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.