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Finding the Fourth Proportional to 330,690.42, 495,791.46 and 105,920.82

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Solution

The fourth proportional to 330,690.42, 495,791.46 and 105,920.82 is: 158,803.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,690.42 : 495,791.46 = 105,920.82 : x
  2. Step 2: Convert to fraction form
    330,690.42/495,791.46 = 105,920.82/x
  3. Step 3: Cross multiply
    330,690.42x = 495,791.46 × 105,920.82
  4. Step 4: Simplify right side
    330,690.42x = 52,514,637,992.20
  5. Step 5: Solve for x
    x = 52,514,637,992.20/330,690.42
  6. Step 6: Final answer
    x = 158,803.02

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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.