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Finding the Fourth Proportional to 5,572.86, 7,690.55 and 3,054.95

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Solution

The fourth proportional to 5,572.86, 7,690.55 and 3,054.95 is: 4,215.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,572.86 : 7,690.55 = 3,054.95 : x
  2. Step 2: Convert to fraction form
    5,572.86/7,690.55 = 3,054.95/x
  3. Step 3: Cross multiply
    5,572.86x = 7,690.55 × 3,054.95
  4. Step 4: Simplify right side
    5,572.86x = 23,494,192.00
  5. Step 5: Solve for x
    x = 23,494,192.00/5,572.86
  6. Step 6: Final answer
    x = 4,215.82

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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.