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Finding the Fourth Proportional to 65,573.76, 90,477.90 and 41,691.72

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Solution

The fourth proportional to 65,573.76, 90,477.90 and 41,691.72 is: 57,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,573.76 : 90,477.90 = 41,691.72 : x
  2. Step 2: Convert to fraction form
    65,573.76/90,477.90 = 41,691.72/x
  3. Step 3: Cross multiply
    65,573.76x = 90,477.90 × 41,691.72
  4. Step 4: Simplify right side
    65,573.76x = 3,772,179,272.99
  5. Step 5: Solve for x
    x = 3,772,179,272.99/65,573.76
  6. Step 6: Final answer
    x = 57,525.74

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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.