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Finding the Fourth Proportional to 116,479.27, 160,690.80 and 74,015.02

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Solution

The fourth proportional to 116,479.27, 160,690.80 and 74,015.02 is: 102,108.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,479.27 : 160,690.80 = 74,015.02 : x
  2. Step 2: Convert to fraction form
    116,479.27/160,690.80 = 74,015.02/x
  3. Step 3: Cross multiply
    116,479.27x = 160,690.80 × 74,015.02
  4. Step 4: Simplify right side
    116,479.27x = 11,893,532,775.82
  5. Step 5: Solve for x
    x = 11,893,532,775.82/116,479.27
  6. Step 6: Final answer
    x = 102,108.58

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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.