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Finding the Fourth Proportional to 7,212.55, 9,953.31 and 4,068.73

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Solution

The fourth proportional to 7,212.55, 9,953.31 and 4,068.73 is: 5,614.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.55 : 9,953.31 = 4,068.73 : x
  2. Step 2: Convert to fraction form
    7,212.55/9,953.31 = 4,068.73/x
  3. Step 3: Cross multiply
    7,212.55x = 9,953.31 × 4,068.73
  4. Step 4: Simplify right side
    7,212.55x = 40,497,331.00
  5. Step 5: Solve for x
    x = 40,497,331.00/7,212.55
  6. Step 6: Final answer
    x = 5,614.84

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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.