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Finding the Fourth Proportional to 294,288.10, 441,432.15 and 72,672.10

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Solution

The fourth proportional to 294,288.10, 441,432.15 and 72,672.10 is: 109,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,288.10 : 441,432.15 = 72,672.10 : x
  2. Step 2: Convert to fraction form
    294,288.10/441,432.15 = 72,672.10/x
  3. Step 3: Cross multiply
    294,288.10x = 441,432.15 × 72,672.10
  4. Step 4: Simplify right side
    294,288.10x = 32,079,801,348.02
  5. Step 5: Solve for x
    x = 32,079,801,348.02/294,288.10
  6. Step 6: Final answer
    x = 109,008.15

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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.