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Finding the Fourth Proportional to 84,704.43, 127,068.35 and 28,560.59

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Solution

The fourth proportional to 84,704.43, 127,068.35 and 28,560.59 is: 42,844.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,704.43 : 127,068.35 = 28,560.59 : x
  2. Step 2: Convert to fraction form
    84,704.43/127,068.35 = 28,560.59/x
  3. Step 3: Cross multiply
    84,704.43x = 127,068.35 × 28,560.59
  4. Step 4: Simplify right side
    84,704.43x = 3,629,146,268.18
  5. Step 5: Solve for x
    x = 3,629,146,268.18/84,704.43
  6. Step 6: Final answer
    x = 42,844.82

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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.