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Finding the Fourth Proportional to 119,097.47, 178,412.65 and 69,072.48

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Solution

The fourth proportional to 119,097.47, 178,412.65 and 69,072.48 is: 103,473.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,097.47 : 178,412.65 = 69,072.48 : x
  2. Step 2: Convert to fraction form
    119,097.47/178,412.65 = 69,072.48/x
  3. Step 3: Cross multiply
    119,097.47x = 178,412.65 × 69,072.48
  4. Step 4: Simplify right side
    119,097.47x = 12,323,404,198.87
  5. Step 5: Solve for x
    x = 12,323,404,198.87/119,097.47
  6. Step 6: Final answer
    x = 103,473.27

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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.