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Finding the Fourth Proportional to 93,371.65, 128,847.75 and 53,079.82

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Solution

The fourth proportional to 93,371.65, 128,847.75 and 53,079.82 is: 73,247.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,371.65 : 128,847.75 = 53,079.82 : x
  2. Step 2: Convert to fraction form
    93,371.65/128,847.75 = 53,079.82/x
  3. Step 3: Cross multiply
    93,371.65x = 128,847.75 × 53,079.82
  4. Step 4: Simplify right side
    93,371.65x = 6,839,215,377.41
  5. Step 5: Solve for x
    x = 6,839,215,377.41/93,371.65
  6. Step 6: Final answer
    x = 73,247.24

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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.