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Finding the Fourth Proportional to 76,190.80, 114,091.80 and 60,638.80

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Solution

The fourth proportional to 76,190.80, 114,091.80 and 60,638.80 is: 90,803.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,190.80 : 114,091.80 = 60,638.80 : x
  2. Step 2: Convert to fraction form
    76,190.80/114,091.80 = 60,638.80/x
  3. Step 3: Cross multiply
    76,190.80x = 114,091.80 × 60,638.80
  4. Step 4: Simplify right side
    76,190.80x = 6,918,389,841.84
  5. Step 5: Solve for x
    x = 6,918,389,841.84/76,190.80
  6. Step 6: Final answer
    x = 90,803.48

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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.