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Finding the Fourth Proportional to 52,791.84, 79,188.48 and 21,607.20

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Solution

The fourth proportional to 52,791.84, 79,188.48 and 21,607.20 is: 32,411.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,791.84 : 79,188.48 = 21,607.20 : x
  2. Step 2: Convert to fraction form
    52,791.84/79,188.48 = 21,607.20/x
  3. Step 3: Cross multiply
    52,791.84x = 79,188.48 × 21,607.20
  4. Step 4: Simplify right side
    52,791.84x = 1,711,041,325.06
  5. Step 5: Solve for x
    x = 1,711,041,325.06/52,791.84
  6. Step 6: Final answer
    x = 32,411.09

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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.