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Finding the Fourth Proportional to 194,067.70, 291,101.45 and 87,326.91

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Solution

The fourth proportional to 194,067.70, 291,101.45 and 87,326.91 is: 130,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,067.70 : 291,101.45 = 87,326.91 : x
  2. Step 2: Convert to fraction form
    194,067.70/291,101.45 = 87,326.91/x
  3. Step 3: Cross multiply
    194,067.70x = 291,101.45 × 87,326.91
  4. Step 4: Simplify right side
    194,067.70x = 25,420,989,688.39
  5. Step 5: Solve for x
    x = 25,420,989,688.39/194,067.70
  6. Step 6: Final answer
    x = 130,990.32

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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.