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Finding the Fourth Proportional to 7,241.71, 9,991.23 and 4,054.53

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Solution

The fourth proportional to 7,241.71, 9,991.23 and 4,054.53 is: 5,593.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,241.71 : 9,991.23 = 4,054.53 : x
  2. Step 2: Convert to fraction form
    7,241.71/9,991.23 = 4,054.53/x
  3. Step 3: Cross multiply
    7,241.71x = 9,991.23 × 4,054.53
  4. Step 4: Simplify right side
    7,241.71x = 40,509,741.77
  5. Step 5: Solve for x
    x = 40,509,741.77/7,241.71
  6. Step 6: Final answer
    x = 5,593.95

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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.