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Finding the Fourth Proportional to 65,587.90, 90,524.75 and 41,709.96

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Solution

The fourth proportional to 65,587.90, 90,524.75 and 41,709.96 is: 57,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,587.90 : 90,524.75 = 41,709.96 : x
  2. Step 2: Convert to fraction form
    65,587.90/90,524.75 = 41,709.96/x
  3. Step 3: Cross multiply
    65,587.90x = 90,524.75 × 41,709.96
  4. Step 4: Simplify right side
    65,587.90x = 3,775,783,701.51
  5. Step 5: Solve for x
    x = 3,775,783,701.51/65,587.90
  6. Step 6: Final answer
    x = 57,568.30

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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.