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Finding the Fourth Proportional to 93,292.38, 128,743.71 and 53,019.54

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Solution

The fourth proportional to 93,292.38, 128,743.71 and 53,019.54 is: 73,167.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,292.38 : 128,743.71 = 53,019.54 : x
  2. Step 2: Convert to fraction form
    93,292.38/128,743.71 = 53,019.54/x
  3. Step 3: Cross multiply
    93,292.38x = 128,743.71 × 53,019.54
  4. Step 4: Simplify right side
    93,292.38x = 6,825,932,282.09
  5. Step 5: Solve for x
    x = 6,825,932,282.09/93,292.38
  6. Step 6: Final answer
    x = 73,167.09

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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.