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Finding the Fourth Proportional to 72,336.30, 108,504.45 and 62,486.70

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Solution

The fourth proportional to 72,336.30, 108,504.45 and 62,486.70 is: 93,730.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,336.30 : 108,504.45 = 62,486.70 : x
  2. Step 2: Convert to fraction form
    72,336.30/108,504.45 = 62,486.70/x
  3. Step 3: Cross multiply
    72,336.30x = 108,504.45 × 62,486.70
  4. Step 4: Simplify right side
    72,336.30x = 6,780,085,015.82
  5. Step 5: Solve for x
    x = 6,780,085,015.82/72,336.30
  6. Step 6: Final answer
    x = 93,730.05

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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.