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Finding the Fourth Proportional to 313,145.70, 469,749.30 and 88,507.86

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Solution

The fourth proportional to 313,145.70, 469,749.30 and 88,507.86 is: 132,770.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,145.70 : 469,749.30 = 88,507.86 : x
  2. Step 2: Convert to fraction form
    313,145.70/469,749.30 = 88,507.86/x
  3. Step 3: Cross multiply
    313,145.70x = 469,749.30 × 88,507.86
  4. Step 4: Simplify right side
    313,145.70x = 41,576,505,279.50
  5. Step 5: Solve for x
    x = 41,576,505,279.50/313,145.70
  6. Step 6: Final answer
    x = 132,770.48

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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.