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Finding the Fourth Proportional to 75,368.35, 113,052.52 and 28,621.22

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Solution

The fourth proportional to 75,368.35, 113,052.52 and 28,621.22 is: 42,931.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,368.35 : 113,052.52 = 28,621.22 : x
  2. Step 2: Convert to fraction form
    75,368.35/113,052.52 = 28,621.22/x
  3. Step 3: Cross multiply
    75,368.35x = 113,052.52 × 28,621.22
  4. Step 4: Simplify right side
    75,368.35x = 3,235,701,046.47
  5. Step 5: Solve for x
    x = 3,235,701,046.47/75,368.35
  6. Step 6: Final answer
    x = 42,931.83

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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.