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Finding the Fourth Proportional to 5,755.78, 8,590.95 and 4,961.74

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Solution

The fourth proportional to 5,755.78, 8,590.95 and 4,961.74 is: 7,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,755.78 : 8,590.95 = 4,961.74 : x
  2. Step 2: Convert to fraction form
    5,755.78/8,590.95 = 4,961.74/x
  3. Step 3: Cross multiply
    5,755.78x = 8,590.95 × 4,961.74
  4. Step 4: Simplify right side
    5,755.78x = 42,626,060.25
  5. Step 5: Solve for x
    x = 42,626,060.25/5,755.78
  6. Step 6: Final answer
    x = 7,405.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.