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Finding the Fourth Proportional to 39,876.48, 59,808.24 and 12,168

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Solution

The fourth proportional to 39,876.48, 59,808.24 and 12,168 is: 18,250.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,876.48 : 59,808.24 = 12,168 : x
  2. Step 2: Convert to fraction form
    39,876.48/59,808.24 = 12,168/x
  3. Step 3: Cross multiply
    39,876.48x = 59,808.24 × 12,168
  4. Step 4: Simplify right side
    39,876.48x = 727,746,664.32
  5. Step 5: Solve for x
    x = 727,746,664.32/39,876.48
  6. Step 6: Final answer
    x = 18,250.02

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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.