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Finding the Fourth Proportional to 221,317.88, 305,398.16 and 125,805.92

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Solution

The fourth proportional to 221,317.88, 305,398.16 and 125,805.92 is: 173,600.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,317.88 : 305,398.16 = 125,805.92 : x
  2. Step 2: Convert to fraction form
    221,317.88/305,398.16 = 125,805.92/x
  3. Step 3: Cross multiply
    221,317.88x = 305,398.16 × 125,805.92
  4. Step 4: Simplify right side
    221,317.88x = 38,420,896,485.11
  5. Step 5: Solve for x
    x = 38,420,896,485.11/221,317.88
  6. Step 6: Final answer
    x = 173,600.51

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1.5x scale

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.