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Finding the Fourth Proportional to 119,859.72, 179,852.40 and 45,031.56

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Solution

The fourth proportional to 119,859.72, 179,852.40 and 45,031.56 is: 67,570.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,859.72 : 179,852.40 = 45,031.56 : x
  2. Step 2: Convert to fraction form
    119,859.72/179,852.40 = 45,031.56/x
  3. Step 3: Cross multiply
    119,859.72x = 179,852.40 × 45,031.56
  4. Step 4: Simplify right side
    119,859.72x = 8,099,034,141.74
  5. Step 5: Solve for x
    x = 8,099,034,141.74/119,859.72
  6. Step 6: Final answer
    x = 67,570.94

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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.