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Finding the Fourth Proportional to 3,251.95, 4,877.91 and 943.45

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Solution

The fourth proportional to 3,251.95, 4,877.91 and 943.45 is: 1,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.95 : 4,877.91 = 943.45 : x
  2. Step 2: Convert to fraction form
    3,251.95/4,877.91 = 943.45/x
  3. Step 3: Cross multiply
    3,251.95x = 4,877.91 × 943.45
  4. Step 4: Simplify right side
    3,251.95x = 4,602,064.19
  5. Step 5: Solve for x
    x = 4,602,064.19/3,251.95
  6. Step 6: Final answer
    x = 1,415.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.