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Finding the Fourth Proportional to 76,669.80, 115,004.70 and 32,346.60

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Solution

The fourth proportional to 76,669.80, 115,004.70 and 32,346.60 is: 48,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,669.80 : 115,004.70 = 32,346.60 : x
  2. Step 2: Convert to fraction form
    76,669.80/115,004.70 = 32,346.60/x
  3. Step 3: Cross multiply
    76,669.80x = 115,004.70 × 32,346.60
  4. Step 4: Simplify right side
    76,669.80x = 3,720,011,029.02
  5. Step 5: Solve for x
    x = 3,720,011,029.02/76,669.80
  6. Step 6: Final answer
    x = 48,519.90

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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.