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Finding the Fourth Proportional to 73,100.46, 100,878.69 and 39,566.46

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Solution

The fourth proportional to 73,100.46, 100,878.69 and 39,566.46 is: 54,601.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,100.46 : 100,878.69 = 39,566.46 : x
  2. Step 2: Convert to fraction form
    73,100.46/100,878.69 = 39,566.46/x
  3. Step 3: Cross multiply
    73,100.46x = 100,878.69 × 39,566.46
  4. Step 4: Simplify right side
    73,100.46x = 3,991,412,652.74
  5. Step 5: Solve for x
    x = 3,991,412,652.74/73,100.46
  6. Step 6: Final answer
    x = 54,601.74

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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.