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Finding the Fourth Proportional to 34,439.60, 51,659.96 and 9,479.49

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Solution

The fourth proportional to 34,439.60, 51,659.96 and 9,479.49 is: 14,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,439.60 : 51,659.96 = 9,479.49 : x
  2. Step 2: Convert to fraction form
    34,439.60/51,659.96 = 9,479.49/x
  3. Step 3: Cross multiply
    34,439.60x = 51,659.96 × 9,479.49
  4. Step 4: Simplify right side
    34,439.60x = 489,710,074.22
  5. Step 5: Solve for x
    x = 489,710,074.22/34,439.60
  6. Step 6: Final answer
    x = 14,219.39

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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.