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Finding the Fourth Proportional to 64,390.88, 96,566.32 and 31,090.24

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Solution

The fourth proportional to 64,390.88, 96,566.32 and 31,090.24 is: 46,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,390.88 : 96,566.32 = 31,090.24 : x
  2. Step 2: Convert to fraction form
    64,390.88/96,566.32 = 31,090.24/x
  3. Step 3: Cross multiply
    64,390.88x = 96,566.32 × 31,090.24
  4. Step 4: Simplify right side
    64,390.88x = 3,002,270,064.72
  5. Step 5: Solve for x
    x = 3,002,270,064.72/64,390.88
  6. Step 6: Final answer
    x = 46,625.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.