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Finding the Fourth Proportional to 67,687.60, 101,547.60 and 34,412.80

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Solution

The fourth proportional to 67,687.60, 101,547.60 and 34,412.80 is: 51,627.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,687.60 : 101,547.60 = 34,412.80 : x
  2. Step 2: Convert to fraction form
    67,687.60/101,547.60 = 34,412.80/x
  3. Step 3: Cross multiply
    67,687.60x = 101,547.60 × 34,412.80
  4. Step 4: Simplify right side
    67,687.60x = 3,494,537,249.28
  5. Step 5: Solve for x
    x = 3,494,537,249.28/67,687.60
  6. Step 6: Final answer
    x = 51,627.44

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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.