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Finding the Fourth Proportional to 52,339.70, 72,231.74 and 28,465.90

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Solution

The fourth proportional to 52,339.70, 72,231.74 and 28,465.90 is: 39,284.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,339.70 : 72,231.74 = 28,465.90 : x
  2. Step 2: Convert to fraction form
    52,339.70/72,231.74 = 28,465.90/x
  3. Step 3: Cross multiply
    52,339.70x = 72,231.74 × 28,465.90
  4. Step 4: Simplify right side
    52,339.70x = 2,056,140,984.18
  5. Step 5: Solve for x
    x = 2,056,140,984.18/52,339.70
  6. Step 6: Final answer
    x = 39,284.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.