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Finding the Fourth Proportional to 208,507.74, 312,780 and 58,749.30

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Solution

The fourth proportional to 208,507.74, 312,780 and 58,749.30 is: 88,129.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,507.74 : 312,780 = 58,749.30 : x
  2. Step 2: Convert to fraction form
    208,507.74/312,780 = 58,749.30/x
  3. Step 3: Cross multiply
    208,507.74x = 312,780 × 58,749.30
  4. Step 4: Simplify right side
    208,507.74x = 18,375,606,054
  5. Step 5: Solve for x
    x = 18,375,606,054/208,507.74
  6. Step 6: Final answer
    x = 88,129.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.