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Finding the Fourth Proportional to 110,719.38, 152,813.63 and 69,345.57

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Solution

The fourth proportional to 110,719.38, 152,813.63 and 69,345.57 is: 95,709.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,719.38 : 152,813.63 = 69,345.57 : x
  2. Step 2: Convert to fraction form
    110,719.38/152,813.63 = 69,345.57/x
  3. Step 3: Cross multiply
    110,719.38x = 152,813.63 × 69,345.57
  4. Step 4: Simplify right side
    110,719.38x = 10,596,947,929.39
  5. Step 5: Solve for x
    x = 10,596,947,929.39/110,719.38
  6. Step 6: Final answer
    x = 95,709.96

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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.