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Finding the Fourth Proportional to 60,926.70, 91,434.94 and 28,905.89

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Solution

The fourth proportional to 60,926.70, 91,434.94 and 28,905.89 is: 43,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,926.70 : 91,434.94 = 28,905.89 : x
  2. Step 2: Convert to fraction form
    60,926.70/91,434.94 = 28,905.89/x
  3. Step 3: Cross multiply
    60,926.70x = 91,434.94 × 28,905.89
  4. Step 4: Simplify right side
    60,926.70x = 2,643,008,086.17
  5. Step 5: Solve for x
    x = 2,643,008,086.17/60,926.70
  6. Step 6: Final answer
    x = 43,380.13

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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.