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Finding the Fourth Proportional to 141,197.40, 211,796.10 and 71,213.40

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Solution

The fourth proportional to 141,197.40, 211,796.10 and 71,213.40 is: 106,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,197.40 : 211,796.10 = 71,213.40 : x
  2. Step 2: Convert to fraction form
    141,197.40/211,796.10 = 71,213.40/x
  3. Step 3: Cross multiply
    141,197.40x = 211,796.10 × 71,213.40
  4. Step 4: Simplify right side
    141,197.40x = 15,082,720,387.74
  5. Step 5: Solve for x
    x = 15,082,720,387.74/141,197.40
  6. Step 6: Final answer
    x = 106,820.10

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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.