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Finding the Fourth Proportional to 64,239.84, 96,185.88 and 45,442.44

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Solution

The fourth proportional to 64,239.84, 96,185.88 and 45,442.44 is: 68,040.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,239.84 : 96,185.88 = 45,442.44 : x
  2. Step 2: Convert to fraction form
    64,239.84/96,185.88 = 45,442.44/x
  3. Step 3: Cross multiply
    64,239.84x = 96,185.88 × 45,442.44
  4. Step 4: Simplify right side
    64,239.84x = 4,370,921,080.75
  5. Step 5: Solve for x
    x = 4,370,921,080.75/64,239.84
  6. Step 6: Final answer
    x = 68,040.66

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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.