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Finding the Fourth Proportional to 412,860.59, 619,291.82 and 113,345.27

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Solution

The fourth proportional to 412,860.59, 619,291.82 and 113,345.27 is: 170,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,860.59 : 619,291.82 = 113,345.27 : x
  2. Step 2: Convert to fraction form
    412,860.59/619,291.82 = 113,345.27/x
  3. Step 3: Cross multiply
    412,860.59x = 619,291.82 × 113,345.27
  4. Step 4: Simplify right side
    412,860.59x = 70,193,798,546.69
  5. Step 5: Solve for x
    x = 70,193,798,546.69/412,860.59
  6. Step 6: Final answer
    x = 170,018.16

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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.