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Finding the Fourth Proportional to 185,930.60, 278,895.90 and 169,309.40

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Solution

The fourth proportional to 185,930.60, 278,895.90 and 169,309.40 is: 253,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,930.60 : 278,895.90 = 169,309.40 : x
  2. Step 2: Convert to fraction form
    185,930.60/278,895.90 = 169,309.40/x
  3. Step 3: Cross multiply
    185,930.60x = 278,895.90 × 169,309.40
  4. Step 4: Simplify right side
    185,930.60x = 47,219,697,491.46
  5. Step 5: Solve for x
    x = 47,219,697,491.46/185,930.60
  6. Step 6: Final answer
    x = 253,964.10

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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.