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Finding the Fourth Proportional to 34,439.12, 51,658.44 and 9,815.12

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Solution

The fourth proportional to 34,439.12, 51,658.44 and 9,815.12 is: 14,722.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,439.12 : 51,658.44 = 9,815.12 : x
  2. Step 2: Convert to fraction form
    34,439.12/51,658.44 = 9,815.12/x
  3. Step 3: Cross multiply
    34,439.12x = 51,658.44 × 9,815.12
  4. Step 4: Simplify right side
    34,439.12x = 507,033,787.61
  5. Step 5: Solve for x
    x = 507,033,787.61/34,439.12
  6. Step 6: Final answer
    x = 14,722.61

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1.5x scale

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.