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Finding the Fourth Proportional to 77,620.53, 116,386.88 and 26,996.29

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Solution

The fourth proportional to 77,620.53, 116,386.88 and 26,996.29 is: 40,479.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,620.53 : 116,386.88 = 26,996.29 : x
  2. Step 2: Convert to fraction form
    77,620.53/116,386.88 = 26,996.29/x
  3. Step 3: Cross multiply
    77,620.53x = 116,386.88 × 26,996.29
  4. Step 4: Simplify right side
    77,620.53x = 3,142,013,538.73
  5. Step 5: Solve for x
    x = 3,142,013,538.73/77,620.53
  6. Step 6: Final answer
    x = 40,479.16

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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.