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Finding the Fourth Proportional to 100,557.63, 150,899.97 and 56,213.48

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Solution

The fourth proportional to 100,557.63, 150,899.97 and 56,213.48 is: 84,355.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,557.63 : 150,899.97 = 56,213.48 : x
  2. Step 2: Convert to fraction form
    100,557.63/150,899.97 = 56,213.48/x
  3. Step 3: Cross multiply
    100,557.63x = 150,899.97 × 56,213.48
  4. Step 4: Simplify right side
    100,557.63x = 8,482,611,691.10
  5. Step 5: Solve for x
    x = 8,482,611,691.10/100,557.63
  6. Step 6: Final answer
    x = 84,355.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.