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Finding the Fourth Proportional to 28,798.92, 39,742.02 and 16,223.76

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Solution

The fourth proportional to 28,798.92, 39,742.02 and 16,223.76 is: 22,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,798.92 : 39,742.02 = 16,223.76 : x
  2. Step 2: Convert to fraction form
    28,798.92/39,742.02 = 16,223.76/x
  3. Step 3: Cross multiply
    28,798.92x = 39,742.02 × 16,223.76
  4. Step 4: Simplify right side
    28,798.92x = 644,764,994.40
  5. Step 5: Solve for x
    x = 644,764,994.40/28,798.92
  6. Step 6: Final answer
    x = 22,388.51

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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.