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Finding the Fourth Proportional to 60,781.80, 91,172.54 and 16,412.96

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Solution

The fourth proportional to 60,781.80, 91,172.54 and 16,412.96 is: 24,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,781.80 : 91,172.54 = 16,412.96 : x
  2. Step 2: Convert to fraction form
    60,781.80/91,172.54 = 16,412.96/x
  3. Step 3: Cross multiply
    60,781.80x = 91,172.54 × 16,412.96
  4. Step 4: Simplify right side
    60,781.80x = 1,496,411,252.12
  5. Step 5: Solve for x
    x = 1,496,411,252.12/60,781.80
  6. Step 6: Final answer
    x = 24,619.40

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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.