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Finding the Fourth Proportional to 69,649.64, 96,157.52 and 42,435.99

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Solution

The fourth proportional to 69,649.64, 96,157.52 and 42,435.99 is: 58,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,649.64 : 96,157.52 = 42,435.99 : x
  2. Step 2: Convert to fraction form
    69,649.64/96,157.52 = 42,435.99/x
  3. Step 3: Cross multiply
    69,649.64x = 96,157.52 × 42,435.99
  4. Step 4: Simplify right side
    69,649.64x = 4,080,539,344.96
  5. Step 5: Solve for x
    x = 4,080,539,344.96/69,649.64
  6. Step 6: Final answer
    x = 58,586.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.