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Finding the Fourth Proportional to 101,611.88, 152,393.28 and 42,415.44

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Solution

The fourth proportional to 101,611.88, 152,393.28 and 42,415.44 is: 63,612.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,611.88 : 152,393.28 = 42,415.44 : x
  2. Step 2: Convert to fraction form
    101,611.88/152,393.28 = 42,415.44/x
  3. Step 3: Cross multiply
    101,611.88x = 152,393.28 × 42,415.44
  4. Step 4: Simplify right side
    101,611.88x = 6,463,828,024.24
  5. Step 5: Solve for x
    x = 6,463,828,024.24/101,611.88
  6. Step 6: Final answer
    x = 63,612.92

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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.