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Finding the Fourth Proportional to 93,455.44, 128,964.84 and 51,013.92

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Solution

The fourth proportional to 93,455.44, 128,964.84 and 51,013.92 is: 70,397.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,455.44 : 128,964.84 = 51,013.92 : x
  2. Step 2: Convert to fraction form
    93,455.44/128,964.84 = 51,013.92/x
  3. Step 3: Cross multiply
    93,455.44x = 128,964.84 × 51,013.92
  4. Step 4: Simplify right side
    93,455.44x = 6,579,002,030.57
  5. Step 5: Solve for x
    x = 6,579,002,030.57/93,455.44
  6. Step 6: Final answer
    x = 70,397.21

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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.