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Finding the Fourth Proportional to 316,658.70, 475,019.21 and 92,021.11

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Solution

The fourth proportional to 316,658.70, 475,019.21 and 92,021.11 is: 138,040.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,658.70 : 475,019.21 = 92,021.11 : x
  2. Step 2: Convert to fraction form
    316,658.70/475,019.21 = 92,021.11/x
  3. Step 3: Cross multiply
    316,658.70x = 475,019.21 × 92,021.11
  4. Step 4: Simplify right side
    316,658.70x = 43,711,794,018.03
  5. Step 5: Solve for x
    x = 43,711,794,018.03/316,658.70
  6. Step 6: Final answer
    x = 138,040.72

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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.