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Finding the Fourth Proportional to 103,620.92, 155,415.91 and 28,733.24

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Solution

The fourth proportional to 103,620.92, 155,415.91 and 28,733.24 is: 43,095.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.92 : 155,415.91 = 28,733.24 : x
  2. Step 2: Convert to fraction form
    103,620.92/155,415.91 = 28,733.24/x
  3. Step 3: Cross multiply
    103,620.92x = 155,415.91 × 28,733.24
  4. Step 4: Simplify right side
    103,620.92x = 4,465,602,641.85
  5. Step 5: Solve for x
    x = 4,465,602,641.85/103,620.92
  6. Step 6: Final answer
    x = 43,095.57

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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.