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Finding the Fourth Proportional to 149,062.58, 205,734.43 and 85,400.22

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Solution

The fourth proportional to 149,062.58, 205,734.43 and 85,400.22 is: 117,868.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,062.58 : 205,734.43 = 85,400.22 : x
  2. Step 2: Convert to fraction form
    149,062.58/205,734.43 = 85,400.22/x
  3. Step 3: Cross multiply
    149,062.58x = 205,734.43 × 85,400.22
  4. Step 4: Simplify right side
    149,062.58x = 17,569,766,461.83
  5. Step 5: Solve for x
    x = 17,569,766,461.83/149,062.58
  6. Step 6: Final answer
    x = 117,868.39

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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.