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Finding the Fourth Proportional to 100,045.05, 150,012.16 and 40,922.23

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Solution

The fourth proportional to 100,045.05, 150,012.16 and 40,922.23 is: 61,360.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,045.05 : 150,012.16 = 40,922.23 : x
  2. Step 2: Convert to fraction form
    100,045.05/150,012.16 = 40,922.23/x
  3. Step 3: Cross multiply
    100,045.05x = 150,012.16 × 40,922.23
  4. Step 4: Simplify right side
    100,045.05x = 6,138,832,114.32
  5. Step 5: Solve for x
    x = 6,138,832,114.32/100,045.05
  6. Step 6: Final answer
    x = 61,360.68

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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.