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Finding the Fourth Proportional to 29,685.30, 40,965.63 and 16,257.39

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Solution

The fourth proportional to 29,685.30, 40,965.63 and 16,257.39 is: 22,435.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,685.30 : 40,965.63 = 16,257.39 : x
  2. Step 2: Convert to fraction form
    29,685.30/40,965.63 = 16,257.39/x
  3. Step 3: Cross multiply
    29,685.30x = 40,965.63 × 16,257.39
  4. Step 4: Simplify right side
    29,685.30x = 665,994,223.51
  5. Step 5: Solve for x
    x = 665,994,223.51/29,685.30
  6. Step 6: Final answer
    x = 22,435.15

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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.