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Finding the Fourth Proportional to 57,698.73, 79,593.84 and 39,762.90

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Solution

The fourth proportional to 57,698.73, 79,593.84 and 39,762.90 is: 54,851.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,698.73 : 79,593.84 = 39,762.90 : x
  2. Step 2: Convert to fraction form
    57,698.73/79,593.84 = 39,762.90/x
  3. Step 3: Cross multiply
    57,698.73x = 79,593.84 × 39,762.90
  4. Step 4: Simplify right side
    57,698.73x = 3,164,881,900.54
  5. Step 5: Solve for x
    x = 3,164,881,900.54/57,698.73
  6. Step 6: Final answer
    x = 54,851.85

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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.