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Finding the Fourth Proportional to 294,408.40, 441,612.60 and 72,792.40

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Solution

The fourth proportional to 294,408.40, 441,612.60 and 72,792.40 is: 109,188.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,408.40 : 441,612.60 = 72,792.40 : x
  2. Step 2: Convert to fraction form
    294,408.40/441,612.60 = 72,792.40/x
  3. Step 3: Cross multiply
    294,408.40x = 441,612.60 × 72,792.40
  4. Step 4: Simplify right side
    294,408.40x = 32,146,041,024.24
  5. Step 5: Solve for x
    x = 32,146,041,024.24/294,408.40
  6. Step 6: Final answer
    x = 109,188.60

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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.