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Finding the Fourth Proportional to 373,188.91, 514,981.26 and 212,021.59

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Solution

The fourth proportional to 373,188.91, 514,981.26 and 212,021.59 is: 292,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,188.91 : 514,981.26 = 212,021.59 : x
  2. Step 2: Convert to fraction form
    373,188.91/514,981.26 = 212,021.59/x
  3. Step 3: Cross multiply
    373,188.91x = 514,981.26 × 212,021.59
  4. Step 4: Simplify right side
    373,188.91x = 109,187,145,565.40
  5. Step 5: Solve for x
    x = 109,187,145,565.40/373,188.91
  6. Step 6: Final answer
    x = 292,578.75

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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.