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Finding the Fourth Proportional to 28,351.01, 39,122.10 and 16,415.10

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Solution

The fourth proportional to 28,351.01, 39,122.10 and 16,415.10 is: 22,651.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.01 : 39,122.10 = 16,415.10 : x
  2. Step 2: Convert to fraction form
    28,351.01/39,122.10 = 16,415.10/x
  3. Step 3: Cross multiply
    28,351.01x = 39,122.10 × 16,415.10
  4. Step 4: Simplify right side
    28,351.01x = 642,193,101.63
  5. Step 5: Solve for x
    x = 642,193,101.63/28,351.01
  6. Step 6: Final answer
    x = 22,651.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.