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Finding the Fourth Proportional to 112,230.50, 154,878.09 and 61,929.50

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Solution

The fourth proportional to 112,230.50, 154,878.09 and 61,929.50 is: 85,462.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,230.50 : 154,878.09 = 61,929.50 : x
  2. Step 2: Convert to fraction form
    112,230.50/154,878.09 = 61,929.50/x
  3. Step 3: Cross multiply
    112,230.50x = 154,878.09 × 61,929.50
  4. Step 4: Simplify right side
    112,230.50x = 9,591,522,674.66
  5. Step 5: Solve for x
    x = 9,591,522,674.66/112,230.50
  6. Step 6: Final answer
    x = 85,462.71

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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.