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Finding the Fourth Proportional to 93,399.80, 128,891.94 and 53,112.56

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Solution

The fourth proportional to 93,399.80, 128,891.94 and 53,112.56 is: 73,295.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,399.80 : 128,891.94 = 53,112.56 : x
  2. Step 2: Convert to fraction form
    93,399.80/128,891.94 = 53,112.56/x
  3. Step 3: Cross multiply
    93,399.80x = 128,891.94 × 53,112.56
  4. Step 4: Simplify right side
    93,399.80x = 6,845,780,896.77
  5. Step 5: Solve for x
    x = 6,845,780,896.77/93,399.80
  6. Step 6: Final answer
    x = 73,295.46

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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.