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Finding the Fourth Proportional to 7,156.55, 10,735.13 and 4,381.49

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Solution

The fourth proportional to 7,156.55, 10,735.13 and 4,381.49 is: 6,572.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,156.55 : 10,735.13 = 4,381.49 : x
  2. Step 2: Convert to fraction form
    7,156.55/10,735.13 = 4,381.49/x
  3. Step 3: Cross multiply
    7,156.55x = 10,735.13 × 4,381.49
  4. Step 4: Simplify right side
    7,156.55x = 47,035,902.54
  5. Step 5: Solve for x
    x = 47,035,902.54/7,156.55
  6. Step 6: Final answer
    x = 6,572.42

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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.