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Finding the Fourth Proportional to 7,177.73, 9,905.21 and 4,033.91

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Solution

The fourth proportional to 7,177.73, 9,905.21 and 4,033.91 is: 5,566.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177.73 : 9,905.21 = 4,033.91 : x
  2. Step 2: Convert to fraction form
    7,177.73/9,905.21 = 4,033.91/x
  3. Step 3: Cross multiply
    7,177.73x = 9,905.21 × 4,033.91
  4. Step 4: Simplify right side
    7,177.73x = 39,956,725.67
  5. Step 5: Solve for x
    x = 39,956,725.67/7,177.73
  6. Step 6: Final answer
    x = 5,566.77

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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.