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Finding the Fourth Proportional to 48,858.70, 73,300.69 and 28,612.55

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Solution

The fourth proportional to 48,858.70, 73,300.69 and 28,612.55 is: 42,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,858.70 : 73,300.69 = 28,612.55 : x
  2. Step 2: Convert to fraction form
    48,858.70/73,300.69 = 28,612.55/x
  3. Step 3: Cross multiply
    48,858.70x = 73,300.69 × 28,612.55
  4. Step 4: Simplify right side
    48,858.70x = 2,097,319,896.12
  5. Step 5: Solve for x
    x = 2,097,319,896.12/48,858.70
  6. Step 6: Final answer
    x = 42,926.23

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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.