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Finding the Fourth Proportional to 354,338.40, 488,987.28 and 193,193.76

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Solution

The fourth proportional to 354,338.40, 488,987.28 and 193,193.76 is: 266,607.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,338.40 : 488,987.28 = 193,193.76 : x
  2. Step 2: Convert to fraction form
    354,338.40/488,987.28 = 193,193.76/x
  3. Step 3: Cross multiply
    354,338.40x = 488,987.28 × 193,193.76
  4. Step 4: Simplify right side
    354,338.40x = 94,469,291,215.37
  5. Step 5: Solve for x
    x = 94,469,291,215.37/354,338.40
  6. Step 6: Final answer
    x = 266,607.55

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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.