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Finding the Fourth Proportional to 299,111.34, 412,540.23 and 191,691.30

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Solution

The fourth proportional to 299,111.34, 412,540.23 and 191,691.30 is: 264,384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,111.34 : 412,540.23 = 191,691.30 : x
  2. Step 2: Convert to fraction form
    299,111.34/412,540.23 = 191,691.30/x
  3. Step 3: Cross multiply
    299,111.34x = 412,540.23 × 191,691.30
  4. Step 4: Simplify right side
    299,111.34x = 79,080,372,991.00
  5. Step 5: Solve for x
    x = 79,080,372,991.00/299,111.34
  6. Step 6: Final answer
    x = 264,384.40

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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.