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Finding the Fourth Proportional to 7,316.70, 10,972.35 and 3,617.70

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Solution

The fourth proportional to 7,316.70, 10,972.35 and 3,617.70 is: 5,425.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,316.70 : 10,972.35 = 3,617.70 : x
  2. Step 2: Convert to fraction form
    7,316.70/10,972.35 = 3,617.70/x
  3. Step 3: Cross multiply
    7,316.70x = 10,972.35 × 3,617.70
  4. Step 4: Simplify right side
    7,316.70x = 39,694,670.60
  5. Step 5: Solve for x
    x = 39,694,670.60/7,316.70
  6. Step 6: Final answer
    x = 5,425.22

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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.