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Finding the Fourth Proportional to 103,216.15, 154,824.46 and 28,337.32

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Solution

The fourth proportional to 103,216.15, 154,824.46 and 28,337.32 is: 42,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,216.15 : 154,824.46 = 28,337.32 : x
  2. Step 2: Convert to fraction form
    103,216.15/154,824.46 = 28,337.32/x
  3. Step 3: Cross multiply
    103,216.15x = 154,824.46 × 28,337.32
  4. Step 4: Simplify right side
    103,216.15x = 4,387,309,738.10
  5. Step 5: Solve for x
    x = 4,387,309,738.10/103,216.15
  6. Step 6: Final answer
    x = 42,506.04

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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.