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Finding the Fourth Proportional to 119,104.47, 178,423.15 and 69,079.48

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Solution

The fourth proportional to 119,104.47, 178,423.15 and 69,079.48 is: 103,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,104.47 : 178,423.15 = 69,079.48 : x
  2. Step 2: Convert to fraction form
    119,104.47/178,423.15 = 69,079.48/x
  3. Step 3: Cross multiply
    119,104.47x = 178,423.15 × 69,079.48
  4. Step 4: Simplify right side
    119,104.47x = 12,325,378,421.96
  5. Step 5: Solve for x
    x = 12,325,378,421.96/119,104.47
  6. Step 6: Final answer
    x = 103,483.76

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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.