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Finding the Fourth Proportional to 65,397.88, 90,276.48 and 44,205.85

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Solution

The fourth proportional to 65,397.88, 90,276.48 and 44,205.85 is: 61,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,397.88 : 90,276.48 = 44,205.85 : x
  2. Step 2: Convert to fraction form
    65,397.88/90,276.48 = 44,205.85/x
  3. Step 3: Cross multiply
    65,397.88x = 90,276.48 × 44,205.85
  4. Step 4: Simplify right side
    65,397.88x = 3,990,748,533.41
  5. Step 5: Solve for x
    x = 3,990,748,533.41/65,397.88
  6. Step 6: Final answer
    x = 61,022.60

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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.