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Finding the Fourth Proportional to 103,909.52, 143,396.52 and 61,466.96

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Solution

The fourth proportional to 103,909.52, 143,396.52 and 61,466.96 is: 84,825.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,909.52 : 143,396.52 = 61,466.96 : x
  2. Step 2: Convert to fraction form
    103,909.52/143,396.52 = 61,466.96/x
  3. Step 3: Cross multiply
    103,909.52x = 143,396.52 × 61,466.96
  4. Step 4: Simplify right side
    103,909.52x = 8,814,148,158.98
  5. Step 5: Solve for x
    x = 8,814,148,158.98/103,909.52
  6. Step 6: Final answer
    x = 84,825.22

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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.