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Finding the Fourth Proportional to 9,924.80, 14,889.50 and 4,379.72

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Solution

The fourth proportional to 9,924.80, 14,889.50 and 4,379.72 is: 6,570.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,924.80 : 14,889.50 = 4,379.72 : x
  2. Step 2: Convert to fraction form
    9,924.80/14,889.50 = 4,379.72/x
  3. Step 3: Cross multiply
    9,924.80x = 14,889.50 × 4,379.72
  4. Step 4: Simplify right side
    9,924.80x = 65,211,840.94
  5. Step 5: Solve for x
    x = 65,211,840.94/9,924.80
  6. Step 6: Final answer
    x = 6,570.59

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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.