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Finding the Fourth Proportional to 356,630.87, 534,919.02 and 103,913.30

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Solution

The fourth proportional to 356,630.87, 534,919.02 and 103,913.30 is: 155,861.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,630.87 : 534,919.02 = 103,913.30 : x
  2. Step 2: Convert to fraction form
    356,630.87/534,919.02 = 103,913.30/x
  3. Step 3: Cross multiply
    356,630.87x = 534,919.02 × 103,913.30
  4. Step 4: Simplify right side
    356,630.87x = 55,585,197,926.37
  5. Step 5: Solve for x
    x = 55,585,197,926.37/356,630.87
  6. Step 6: Final answer
    x = 155,861.99

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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.