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Finding the Fourth Proportional to 93,385.82, 128,687.47 and 66,452.87

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Solution

The fourth proportional to 93,385.82, 128,687.47 and 66,452.87 is: 91,573.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,385.82 : 128,687.47 = 66,452.87 : x
  2. Step 2: Convert to fraction form
    93,385.82/128,687.47 = 66,452.87/x
  3. Step 3: Cross multiply
    93,385.82x = 128,687.47 × 66,452.87
  4. Step 4: Simplify right side
    93,385.82x = 8,551,650,904.97
  5. Step 5: Solve for x
    x = 8,551,650,904.97/93,385.82
  6. Step 6: Final answer
    x = 91,573.34

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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.