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Finding the Fourth Proportional to 28,807.60, 43,204.20 and 11,034.40

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Solution

The fourth proportional to 28,807.60, 43,204.20 and 11,034.40 is: 16,548.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.60 : 43,204.20 = 11,034.40 : x
  2. Step 2: Convert to fraction form
    28,807.60/43,204.20 = 11,034.40/x
  3. Step 3: Cross multiply
    28,807.60x = 43,204.20 × 11,034.40
  4. Step 4: Simplify right side
    28,807.60x = 476,732,424.48
  5. Step 5: Solve for x
    x = 476,732,424.48/28,807.60
  6. Step 6: Final answer
    x = 16,548.84

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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.