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Finding the Fourth Proportional to 383,869.76, 529,508 and 247,690.56

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Solution

The fourth proportional to 383,869.76, 529,508 and 247,690.56 is: 341,663.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,869.76 : 529,508 = 247,690.56 : x
  2. Step 2: Convert to fraction form
    383,869.76/529,508 = 247,690.56/x
  3. Step 3: Cross multiply
    383,869.76x = 529,508 × 247,690.56
  4. Step 4: Simplify right side
    383,869.76x = 131,154,133,044.48
  5. Step 5: Solve for x
    x = 131,154,133,044.48/383,869.76
  6. Step 6: Final answer
    x = 341,663.10

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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.