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Finding the Fourth Proportional to 104,173.74, 143,759.70 and 56,426.97

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Solution

The fourth proportional to 104,173.74, 143,759.70 and 56,426.97 is: 77,869.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,173.74 : 143,759.70 = 56,426.97 : x
  2. Step 2: Convert to fraction form
    104,173.74/143,759.70 = 56,426.97/x
  3. Step 3: Cross multiply
    104,173.74x = 143,759.70 × 56,426.97
  4. Step 4: Simplify right side
    104,173.74x = 8,111,924,279.11
  5. Step 5: Solve for x
    x = 8,111,924,279.11/104,173.74
  6. Step 6: Final answer
    x = 77,869.19

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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.