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Finding the Fourth Proportional to 55,565.60, 76,684.59 and 31,692.87

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Solution

The fourth proportional to 55,565.60, 76,684.59 and 31,692.87 is: 43,738.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,565.60 : 76,684.59 = 31,692.87 : x
  2. Step 2: Convert to fraction form
    55,565.60/76,684.59 = 31,692.87/x
  3. Step 3: Cross multiply
    55,565.60x = 76,684.59 × 31,692.87
  4. Step 4: Simplify right side
    55,565.60x = 2,430,354,741.87
  5. Step 5: Solve for x
    x = 2,430,354,741.87/55,565.60
  6. Step 6: Final answer
    x = 43,738.48

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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.