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Finding the Fourth Proportional to 61,897.89, 85,418.85 and 33,603.57

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Solution

The fourth proportional to 61,897.89, 85,418.85 and 33,603.57 is: 46,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,897.89 : 85,418.85 = 33,603.57 : x
  2. Step 2: Convert to fraction form
    61,897.89/85,418.85 = 33,603.57/x
  3. Step 3: Cross multiply
    61,897.89x = 85,418.85 × 33,603.57
  4. Step 4: Simplify right side
    61,897.89x = 2,870,378,305.29
  5. Step 5: Solve for x
    x = 2,870,378,305.29/61,897.89
  6. Step 6: Final answer
    x = 46,372.80

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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.