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Finding the Fourth Proportional to 65,485.64, 90,408.48 and 44,296.04

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Solution

The fourth proportional to 65,485.64, 90,408.48 and 44,296.04 is: 61,154.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,485.64 : 90,408.48 = 44,296.04 : x
  2. Step 2: Convert to fraction form
    65,485.64/90,408.48 = 44,296.04/x
  3. Step 3: Cross multiply
    65,485.64x = 90,408.48 × 44,296.04
  4. Step 4: Simplify right side
    65,485.64x = 4,004,737,646.42
  5. Step 5: Solve for x
    x = 4,004,737,646.42/65,485.64
  6. Step 6: Final answer
    x = 61,154.44

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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.