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Finding the Fourth Proportional to 30,994.98, 42,772.17 and 16,847.46

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Solution

The fourth proportional to 30,994.98, 42,772.17 and 16,847.46 is: 23,249.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,994.98 : 42,772.17 = 16,847.46 : x
  2. Step 2: Convert to fraction form
    30,994.98/42,772.17 = 16,847.46/x
  3. Step 3: Cross multiply
    30,994.98x = 42,772.17 × 16,847.46
  4. Step 4: Simplify right side
    30,994.98x = 720,602,423.19
  5. Step 5: Solve for x
    x = 720,602,423.19/30,994.98
  6. Step 6: Final answer
    x = 23,249.00

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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.