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Finding the Fourth Proportional to 117,886.87, 176,731.10 and 51,276.83

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Solution

The fourth proportional to 117,886.87, 176,731.10 and 51,276.83 is: 76,872.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,886.87 : 176,731.10 = 51,276.83 : x
  2. Step 2: Convert to fraction form
    117,886.87/176,731.10 = 51,276.83/x
  3. Step 3: Cross multiply
    117,886.87x = 176,731.10 × 51,276.83
  4. Step 4: Simplify right side
    117,886.87x = 9,062,209,430.37
  5. Step 5: Solve for x
    x = 9,062,209,430.37/117,886.87
  6. Step 6: Final answer
    x = 76,872.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.