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Finding the Fourth Proportional to 93,135.86, 128,523.91 and 52,847.21

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Solution

The fourth proportional to 93,135.86, 128,523.91 and 52,847.21 is: 72,927.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,135.86 : 128,523.91 = 52,847.21 : x
  2. Step 2: Convert to fraction form
    93,135.86/128,523.91 = 52,847.21/x
  3. Step 3: Cross multiply
    93,135.86x = 128,523.91 × 52,847.21
  4. Step 4: Simplify right side
    93,135.86x = 6,792,129,797.56
  5. Step 5: Solve for x
    x = 6,792,129,797.56/93,135.86
  6. Step 6: Final answer
    x = 72,927.12

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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.