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Finding the Fourth Proportional to 82,791.40, 124,187.10 and 49,613.80

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Solution

The fourth proportional to 82,791.40, 124,187.10 and 49,613.80 is: 74,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,791.40 : 124,187.10 = 49,613.80 : x
  2. Step 2: Convert to fraction form
    82,791.40/124,187.10 = 49,613.80/x
  3. Step 3: Cross multiply
    82,791.40x = 124,187.10 × 49,613.80
  4. Step 4: Simplify right side
    82,791.40x = 6,161,393,941.98
  5. Step 5: Solve for x
    x = 6,161,393,941.98/82,791.40
  6. Step 6: Final answer
    x = 74,420.70

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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.