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Finding the Fourth Proportional to 101,901.66, 152,803.35 and 42,721.44

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Solution

The fourth proportional to 101,901.66, 152,803.35 and 42,721.44 is: 64,061.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,901.66 : 152,803.35 = 42,721.44 : x
  2. Step 2: Convert to fraction form
    101,901.66/152,803.35 = 42,721.44/x
  3. Step 3: Cross multiply
    101,901.66x = 152,803.35 × 42,721.44
  4. Step 4: Simplify right side
    101,901.66x = 6,527,979,148.82
  5. Step 5: Solve for x
    x = 6,527,979,148.82/101,901.66
  6. Step 6: Final answer
    x = 64,061.56

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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.