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Finding the Fourth Proportional to 220,969.40, 304,919.18 and 124,165.88

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Solution

The fourth proportional to 220,969.40, 304,919.18 and 124,165.88 is: 171,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,969.40 : 304,919.18 = 124,165.88 : x
  2. Step 2: Convert to fraction form
    220,969.40/304,919.18 = 124,165.88/x
  3. Step 3: Cross multiply
    220,969.40x = 304,919.18 × 124,165.88
  4. Step 4: Simplify right side
    220,969.40x = 37,860,558,313.58
  5. Step 5: Solve for x
    x = 37,860,558,313.58/220,969.40
  6. Step 6: Final answer
    x = 171,338.47

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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.