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Finding the Fourth Proportional to 93,786.52, 129,428.66 and 51,345.36

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Solution

The fourth proportional to 93,786.52, 129,428.66 and 51,345.36 is: 70,858.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,786.52 : 129,428.66 = 51,345.36 : x
  2. Step 2: Convert to fraction form
    93,786.52/129,428.66 = 51,345.36/x
  3. Step 3: Cross multiply
    93,786.52x = 129,428.66 × 51,345.36
  4. Step 4: Simplify right side
    93,786.52x = 6,645,561,142.02
  5. Step 5: Solve for x
    x = 6,645,561,142.02/93,786.52
  6. Step 6: Final answer
    x = 70,858.38

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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.