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Finding the Fourth Proportional to 208,627.48, 312,859.32 and 73,662.76

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Solution

The fourth proportional to 208,627.48, 312,859.32 and 73,662.76 is: 110,465.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,627.48 : 312,859.32 = 73,662.76 : x
  2. Step 2: Convert to fraction form
    208,627.48/312,859.32 = 73,662.76/x
  3. Step 3: Cross multiply
    208,627.48x = 312,859.32 × 73,662.76
  4. Step 4: Simplify right side
    208,627.48x = 23,046,081,002.92
  5. Step 5: Solve for x
    x = 23,046,081,002.92/208,627.48
  6. Step 6: Final answer
    x = 110,465.22

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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.