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Finding the Fourth Proportional to 316,067.49, 474,064.74 and 79,392.15

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Solution

The fourth proportional to 316,067.49, 474,064.74 and 79,392.15 is: 119,079.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,067.49 : 474,064.74 = 79,392.15 : x
  2. Step 2: Convert to fraction form
    316,067.49/474,064.74 = 79,392.15/x
  3. Step 3: Cross multiply
    316,067.49x = 474,064.74 × 79,392.15
  4. Step 4: Simplify right side
    316,067.49x = 37,637,018,947.79
  5. Step 5: Solve for x
    x = 37,637,018,947.79/316,067.49
  6. Step 6: Final answer
    x = 119,079.06

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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.