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Finding the Fourth Proportional to 93,891.78, 129,573.81 and 51,449.94

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Solution

The fourth proportional to 93,891.78, 129,573.81 and 51,449.94 is: 71,002.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,891.78 : 129,573.81 = 51,449.94 : x
  2. Step 2: Convert to fraction form
    93,891.78/129,573.81 = 51,449.94/x
  3. Step 3: Cross multiply
    93,891.78x = 129,573.81 × 51,449.94
  4. Step 4: Simplify right side
    93,891.78x = 6,666,564,750.07
  5. Step 5: Solve for x
    x = 6,666,564,750.07/93,891.78
  6. Step 6: Final answer
    x = 71,002.65

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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.