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Finding the Fourth Proportional to 5,415.94, 7,472.70 and 3,736.81

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Solution

The fourth proportional to 5,415.94, 7,472.70 and 3,736.81 is: 5,155.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.94 : 7,472.70 = 3,736.81 : x
  2. Step 2: Convert to fraction form
    5,415.94/7,472.70 = 3,736.81/x
  3. Step 3: Cross multiply
    5,415.94x = 7,472.70 × 3,736.81
  4. Step 4: Simplify right side
    5,415.94x = 27,924,060.09
  5. Step 5: Solve for x
    x = 27,924,060.09/5,415.94
  6. Step 6: Final answer
    x = 5,155.90

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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.