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Finding the Fourth Proportional to 73,053.68, 109,583.64 and 28,690.05

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Solution

The fourth proportional to 73,053.68, 109,583.64 and 28,690.05 is: 43,036.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,053.68 : 109,583.64 = 28,690.05 : x
  2. Step 2: Convert to fraction form
    73,053.68/109,583.64 = 28,690.05/x
  3. Step 3: Cross multiply
    73,053.68x = 109,583.64 × 28,690.05
  4. Step 4: Simplify right side
    73,053.68x = 3,143,959,836.82
  5. Step 5: Solve for x
    x = 3,143,959,836.82/73,053.68
  6. Step 6: Final answer
    x = 43,036.30

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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.