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Finding the Fourth Proportional to 61,179.80, 91,769.70 and 37,851.80

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Solution

The fourth proportional to 61,179.80, 91,769.70 and 37,851.80 is: 56,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,179.80 : 91,769.70 = 37,851.80 : x
  2. Step 2: Convert to fraction form
    61,179.80/91,769.70 = 37,851.80/x
  3. Step 3: Cross multiply
    61,179.80x = 91,769.70 × 37,851.80
  4. Step 4: Simplify right side
    61,179.80x = 3,473,648,330.46
  5. Step 5: Solve for x
    x = 3,473,648,330.46/61,179.80
  6. Step 6: Final answer
    x = 56,777.70

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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.