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Finding the Fourth Proportional to 104,165.52, 143,748.65 and 56,418.88

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Solution

The fourth proportional to 104,165.52, 143,748.65 and 56,418.88 is: 77,858.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,165.52 : 143,748.65 = 56,418.88 : x
  2. Step 2: Convert to fraction form
    104,165.52/143,748.65 = 56,418.88/x
  3. Step 3: Cross multiply
    104,165.52x = 143,748.65 × 56,418.88
  4. Step 4: Simplify right side
    104,165.52x = 8,110,136,833.67
  5. Step 5: Solve for x
    x = 8,110,136,833.67/104,165.52
  6. Step 6: Final answer
    x = 77,858.17

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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.