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Finding the Fourth Proportional to 119,196.60, 178,951.16 and 79,929.42

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Solution

The fourth proportional to 119,196.60, 178,951.16 and 79,929.42 is: 119,998.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,196.60 : 178,951.16 = 79,929.42 : x
  2. Step 2: Convert to fraction form
    119,196.60/178,951.16 = 79,929.42/x
  3. Step 3: Cross multiply
    119,196.60x = 178,951.16 × 79,929.42
  4. Step 4: Simplify right side
    119,196.60x = 14,303,462,427.13
  5. Step 5: Solve for x
    x = 14,303,462,427.13/119,196.60
  6. Step 6: Final answer
    x = 119,998.91

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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.