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Finding the Fourth Proportional to 101,979.48, 152,968.62 and 39,649.98

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Solution

The fourth proportional to 101,979.48, 152,968.62 and 39,649.98 is: 59,474.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,979.48 : 152,968.62 = 39,649.98 : x
  2. Step 2: Convert to fraction form
    101,979.48/152,968.62 = 39,649.98/x
  3. Step 3: Cross multiply
    101,979.48x = 152,968.62 × 39,649.98
  4. Step 4: Simplify right side
    101,979.48x = 6,065,202,723.63
  5. Step 5: Solve for x
    x = 6,065,202,723.63/101,979.48
  6. Step 6: Final answer
    x = 59,474.74

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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.