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Finding the Fourth Proportional to 61,200.71, 91,800.90 and 34,534.58

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Solution

The fourth proportional to 61,200.71, 91,800.90 and 34,534.58 is: 51,801.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,200.71 : 91,800.90 = 34,534.58 : x
  2. Step 2: Convert to fraction form
    61,200.71/91,800.90 = 34,534.58/x
  3. Step 3: Cross multiply
    61,200.71x = 91,800.90 × 34,534.58
  4. Step 4: Simplify right side
    61,200.71x = 3,170,305,525.12
  5. Step 5: Solve for x
    x = 3,170,305,525.12/61,200.71
  6. Step 6: Final answer
    x = 51,801.78

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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.