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Finding the Fourth Proportional to 7,220.68, 9,964.66 and 4,237.32

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Solution

The fourth proportional to 7,220.68, 9,964.66 and 4,237.32 is: 5,847.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.68 : 9,964.66 = 4,237.32 : x
  2. Step 2: Convert to fraction form
    7,220.68/9,964.66 = 4,237.32/x
  3. Step 3: Cross multiply
    7,220.68x = 9,964.66 × 4,237.32
  4. Step 4: Simplify right side
    7,220.68x = 42,223,453.11
  5. Step 5: Solve for x
    x = 42,223,453.11/7,220.68
  6. Step 6: Final answer
    x = 5,847.57

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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.