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Finding the Fourth Proportional to 39,009.70, 58,492.95 and 16,819.30

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Solution

The fourth proportional to 39,009.70, 58,492.95 and 16,819.30 is: 25,219.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,009.70 : 58,492.95 = 16,819.30 : x
  2. Step 2: Convert to fraction form
    39,009.70/58,492.95 = 16,819.30/x
  3. Step 3: Cross multiply
    39,009.70x = 58,492.95 × 16,819.30
  4. Step 4: Simplify right side
    39,009.70x = 983,810,473.94
  5. Step 5: Solve for x
    x = 983,810,473.94/39,009.70
  6. Step 6: Final answer
    x = 25,219.64

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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.