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Finding the Fourth Proportional to 117,690.76, 176,436.70 and 51,080.52

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Solution

The fourth proportional to 117,690.76, 176,436.70 and 51,080.52 is: 76,577.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,690.76 : 176,436.70 = 51,080.52 : x
  2. Step 2: Convert to fraction form
    117,690.76/176,436.70 = 51,080.52/x
  3. Step 3: Cross multiply
    117,690.76x = 176,436.70 × 51,080.52
  4. Step 4: Simplify right side
    117,690.76x = 9,012,478,383.08
  5. Step 5: Solve for x
    x = 9,012,478,383.08/117,690.76
  6. Step 6: Final answer
    x = 76,577.62

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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.