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Finding the Fourth Proportional to 93,305.50, 128,764.92 and 53,020.96

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Solution

The fourth proportional to 93,305.50, 128,764.92 and 53,020.96 is: 73,170.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,305.50 : 128,764.92 = 53,020.96 : x
  2. Step 2: Convert to fraction form
    93,305.50/128,764.92 = 53,020.96/x
  3. Step 3: Cross multiply
    93,305.50x = 128,764.92 × 53,020.96
  4. Step 4: Simplify right side
    93,305.50x = 6,827,239,672.72
  5. Step 5: Solve for x
    x = 6,827,239,672.72/93,305.50
  6. Step 6: Final answer
    x = 73,170.82

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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.