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Finding the Fourth Proportional to 64,082.34, 87,791.34 and 61,686.42

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Solution

The fourth proportional to 64,082.34, 87,791.34 and 61,686.42 is: 84,508.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,082.34 : 87,791.34 = 61,686.42 : x
  2. Step 2: Convert to fraction form
    64,082.34/87,791.34 = 61,686.42/x
  3. Step 3: Cross multiply
    64,082.34x = 87,791.34 × 61,686.42
  4. Step 4: Simplify right side
    64,082.34x = 5,415,533,471.60
  5. Step 5: Solve for x
    x = 5,415,533,471.60/64,082.34
  6. Step 6: Final answer
    x = 84,508.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.