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Finding the Fourth Proportional to 93,861.86, 140,874.80 and 54,364.64

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Solution

The fourth proportional to 93,861.86, 140,874.80 and 54,364.64 is: 81,594.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,861.86 : 140,874.80 = 54,364.64 : x
  2. Step 2: Convert to fraction form
    93,861.86/140,874.80 = 54,364.64/x
  3. Step 3: Cross multiply
    93,861.86x = 140,874.80 × 54,364.64
  4. Step 4: Simplify right side
    93,861.86x = 7,658,606,810.87
  5. Step 5: Solve for x
    x = 7,658,606,810.87/93,861.86
  6. Step 6: Final answer
    x = 81,594.45

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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.