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Finding the Fourth Proportional to 4,959.60, 7,440.72 and 4,415.49

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Solution

The fourth proportional to 4,959.60, 7,440.72 and 4,415.49 is: 6,624.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,959.60 : 7,440.72 = 4,415.49 : x
  2. Step 2: Convert to fraction form
    4,959.60/7,440.72 = 4,415.49/x
  3. Step 3: Cross multiply
    4,959.60x = 7,440.72 × 4,415.49
  4. Step 4: Simplify right side
    4,959.60x = 32,854,424.75
  5. Step 5: Solve for x
    x = 32,854,424.75/4,959.60
  6. Step 6: Final answer
    x = 6,624.41

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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.