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Finding the Fourth Proportional to 72,916.74, 100,624.77 and 40,650.93

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Solution

The fourth proportional to 72,916.74, 100,624.77 and 40,650.93 is: 56,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,916.74 : 100,624.77 = 40,650.93 : x
  2. Step 2: Convert to fraction form
    72,916.74/100,624.77 = 40,650.93/x
  3. Step 3: Cross multiply
    72,916.74x = 100,624.77 × 40,650.93
  4. Step 4: Simplify right side
    72,916.74x = 4,090,490,481.54
  5. Step 5: Solve for x
    x = 4,090,490,481.54/72,916.74
  6. Step 6: Final answer
    x = 56,098.10

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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.