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Finding the Fourth Proportional to 29,565.84, 40,800.48 and 16,990.80

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Solution

The fourth proportional to 29,565.84, 40,800.48 and 16,990.80 is: 23,447.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,565.84 : 40,800.48 = 16,990.80 : x
  2. Step 2: Convert to fraction form
    29,565.84/40,800.48 = 16,990.80/x
  3. Step 3: Cross multiply
    29,565.84x = 40,800.48 × 16,990.80
  4. Step 4: Simplify right side
    29,565.84x = 693,232,795.58
  5. Step 5: Solve for x
    x = 693,232,795.58/29,565.84
  6. Step 6: Final answer
    x = 23,447.09

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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.