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Finding the Fourth Proportional to 69,097.92, 103,646.85 and 19,178.01

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Solution

The fourth proportional to 69,097.92, 103,646.85 and 19,178.01 is: 28,767.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,097.92 : 103,646.85 = 19,178.01 : x
  2. Step 2: Convert to fraction form
    69,097.92/103,646.85 = 19,178.01/x
  3. Step 3: Cross multiply
    69,097.92x = 103,646.85 × 19,178.01
  4. Step 4: Simplify right side
    69,097.92x = 1,987,740,325.77
  5. Step 5: Solve for x
    x = 1,987,740,325.77/69,097.92
  6. Step 6: Final answer
    x = 28,767.01

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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.