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Finding the Fourth Proportional to 194,139.20, 291,218.40 and 100,827.20

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Solution

The fourth proportional to 194,139.20, 291,218.40 and 100,827.20 is: 151,245.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,139.20 : 291,218.40 = 100,827.20 : x
  2. Step 2: Convert to fraction form
    194,139.20/291,218.40 = 100,827.20/x
  3. Step 3: Cross multiply
    194,139.20x = 291,218.40 × 100,827.20
  4. Step 4: Simplify right side
    194,139.20x = 29,362,735,860.48
  5. Step 5: Solve for x
    x = 29,362,735,860.48/194,139.20
  6. Step 6: Final answer
    x = 151,245.79

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1.5x scale

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.