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Finding the Fourth Proportional to 75,755.90, 104,543.35 and 45,558.52

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Solution

The fourth proportional to 75,755.90, 104,543.35 and 45,558.52 is: 62,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,755.90 : 104,543.35 = 45,558.52 : x
  2. Step 2: Convert to fraction form
    75,755.90/104,543.35 = 45,558.52/x
  3. Step 3: Cross multiply
    75,755.90x = 104,543.35 × 45,558.52
  4. Step 4: Simplify right side
    75,755.90x = 4,762,840,097.43
  5. Step 5: Solve for x
    x = 4,762,840,097.43/75,755.90
  6. Step 6: Final answer
    x = 62,870.88

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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.