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Finding the Fourth Proportional to 220,597.22, 304,446.66 and 129,981.44

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Solution

The fourth proportional to 220,597.22, 304,446.66 and 129,981.44 is: 179,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,597.22 : 304,446.66 = 129,981.44 : x
  2. Step 2: Convert to fraction form
    220,597.22/304,446.66 = 129,981.44/x
  3. Step 3: Cross multiply
    220,597.22x = 304,446.66 × 129,981.44
  4. Step 4: Simplify right side
    220,597.22x = 39,572,415,269.99
  5. Step 5: Solve for x
    x = 39,572,415,269.99/220,597.22
  6. Step 6: Final answer
    x = 179,387.64

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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.