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Finding the Fourth Proportional to 7,177.74, 9,905.07 and 4,033.98

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Solution

The fourth proportional to 7,177.74, 9,905.07 and 4,033.98 is: 5,566.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,177.74 : 9,905.07 = 4,033.98 : x
  2. Step 2: Convert to fraction form
    7,177.74/9,905.07 = 4,033.98/x
  3. Step 3: Cross multiply
    7,177.74x = 9,905.07 × 4,033.98
  4. Step 4: Simplify right side
    7,177.74x = 39,956,854.28
  5. Step 5: Solve for x
    x = 39,956,854.28/7,177.74
  6. Step 6: Final answer
    x = 5,566.77

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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.