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Finding the Fourth Proportional to 105,618.56, 158,427.84 and 42,467.52

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Solution

The fourth proportional to 105,618.56, 158,427.84 and 42,467.52 is: 63,701.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,618.56 : 158,427.84 = 42,467.52 : x
  2. Step 2: Convert to fraction form
    105,618.56/158,427.84 = 42,467.52/x
  3. Step 3: Cross multiply
    105,618.56x = 158,427.84 × 42,467.52
  4. Step 4: Simplify right side
    105,618.56x = 6,728,037,463.76
  5. Step 5: Solve for x
    x = 6,728,037,463.76/105,618.56
  6. Step 6: Final answer
    x = 63,701.28

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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.