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Finding the Fourth Proportional to 93,562.97, 128,791.53 and 81,605.52

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Solution

The fourth proportional to 93,562.97, 128,791.53 and 81,605.52 is: 112,331.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,562.97 : 128,791.53 = 81,605.52 : x
  2. Step 2: Convert to fraction form
    93,562.97/128,791.53 = 81,605.52/x
  3. Step 3: Cross multiply
    93,562.97x = 128,791.53 × 81,605.52
  4. Step 4: Simplify right side
    93,562.97x = 10,510,099,777.25
  5. Step 5: Solve for x
    x = 10,510,099,777.25/93,562.97
  6. Step 6: Final answer
    x = 112,331.84

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1.5x scale

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.