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Finding the Fourth Proportional to 61,889.01, 85,408.75 and 36,390.77

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Solution

The fourth proportional to 61,889.01, 85,408.75 and 36,390.77 is: 50,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,889.01 : 85,408.75 = 36,390.77 : x
  2. Step 2: Convert to fraction form
    61,889.01/85,408.75 = 36,390.77/x
  3. Step 3: Cross multiply
    61,889.01x = 85,408.75 × 36,390.77
  4. Step 4: Simplify right side
    61,889.01x = 3,108,090,177.24
  5. Step 5: Solve for x
    x = 3,108,090,177.24/61,889.01
  6. Step 6: Final answer
    x = 50,220.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.