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Finding the Fourth Proportional to 7,079.68, 9,772.68 and 4,720.96

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Solution

The fourth proportional to 7,079.68, 9,772.68 and 4,720.96 is: 6,516.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.68 : 9,772.68 = 4,720.96 : x
  2. Step 2: Convert to fraction form
    7,079.68/9,772.68 = 4,720.96/x
  3. Step 3: Cross multiply
    7,079.68x = 9,772.68 × 4,720.96
  4. Step 4: Simplify right side
    7,079.68x = 46,136,431.37
  5. Step 5: Solve for x
    x = 46,136,431.37/7,079.68
  6. Step 6: Final answer
    x = 6,516.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.