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Finding the Fourth Proportional to 570,221.12, 855,322.72 and 196,247.36

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Solution

The fourth proportional to 570,221.12, 855,322.72 and 196,247.36 is: 294,367.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,221.12 : 855,322.72 = 196,247.36 : x
  2. Step 2: Convert to fraction form
    570,221.12/855,322.72 = 196,247.36/x
  3. Step 3: Cross multiply
    570,221.12x = 855,322.72 × 196,247.36
  4. Step 4: Simplify right side
    570,221.12x = 167,854,825,748.02
  5. Step 5: Solve for x
    x = 167,854,825,748.02/570,221.12
  6. Step 6: Final answer
    x = 294,367.96

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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.