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Finding the Fourth Proportional to 28,193.06, 38,905.90 and 16,256.90

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Solution

The fourth proportional to 28,193.06, 38,905.90 and 16,256.90 is: 22,434.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.06 : 38,905.90 = 16,256.90 : x
  2. Step 2: Convert to fraction form
    28,193.06/38,905.90 = 16,256.90/x
  3. Step 3: Cross multiply
    28,193.06x = 38,905.90 × 16,256.90
  4. Step 4: Simplify right side
    28,193.06x = 632,489,325.71
  5. Step 5: Solve for x
    x = 632,489,325.71/28,193.06
  6. Step 6: Final answer
    x = 22,434.22

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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.