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Finding the Fourth Proportional to 28,981.52, 39,994.44 and 16,407.44

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Solution

The fourth proportional to 28,981.52, 39,994.44 and 16,407.44 is: 22,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.52 : 39,994.44 = 16,407.44 : x
  2. Step 2: Convert to fraction form
    28,981.52/39,994.44 = 16,407.44/x
  3. Step 3: Cross multiply
    28,981.52x = 39,994.44 × 16,407.44
  4. Step 4: Simplify right side
    28,981.52x = 656,206,374.63
  5. Step 5: Solve for x
    x = 656,206,374.63/28,981.52
  6. Step 6: Final answer
    x = 22,642.23

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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.