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Finding the Fourth Proportional to 7,174.44, 9,900.90 and 4,030.92

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Solution

The fourth proportional to 7,174.44, 9,900.90 and 4,030.92 is: 5,562.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,174.44 : 9,900.90 = 4,030.92 : x
  2. Step 2: Convert to fraction form
    7,174.44/9,900.90 = 4,030.92/x
  3. Step 3: Cross multiply
    7,174.44x = 9,900.90 × 4,030.92
  4. Step 4: Simplify right side
    7,174.44x = 39,909,735.83
  5. Step 5: Solve for x
    x = 39,909,735.83/7,174.44
  6. Step 6: Final answer
    x = 5,562.77

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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.