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Finding the Fourth Proportional to 113,253.61, 170,011.64 and 60,765.61

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Solution

The fourth proportional to 113,253.61, 170,011.64 and 60,765.61 is: 91,218.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,253.61 : 170,011.64 = 60,765.61 : x
  2. Step 2: Convert to fraction form
    113,253.61/170,011.64 = 60,765.61/x
  3. Step 3: Cross multiply
    113,253.61x = 170,011.64 × 60,765.61
  4. Step 4: Simplify right side
    113,253.61x = 10,330,860,707.87
  5. Step 5: Solve for x
    x = 10,330,860,707.87/113,253.61
  6. Step 6: Final answer
    x = 91,218.82

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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.