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Finding the Fourth Proportional to 7,176.88, 9,903.90 and 4,033

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Solution

The fourth proportional to 7,176.88, 9,903.90 and 4,033 is: 5,565.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.88 : 9,903.90 = 4,033 : x
  2. Step 2: Convert to fraction form
    7,176.88/9,903.90 = 4,033/x
  3. Step 3: Cross multiply
    7,176.88x = 9,903.90 × 4,033
  4. Step 4: Simplify right side
    7,176.88x = 39,942,428.70
  5. Step 5: Solve for x
    x = 39,942,428.70/7,176.88
  6. Step 6: Final answer
    x = 5,565.43

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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.