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Finding the Fourth Proportional to 479,355.80, 718,980.56 and 171,595.58

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Solution

The fourth proportional to 479,355.80, 718,980.56 and 171,595.58 is: 257,374.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,355.80 : 718,980.56 = 171,595.58 : x
  2. Step 2: Convert to fraction form
    479,355.80/718,980.56 = 171,595.58/x
  3. Step 3: Cross multiply
    479,355.80x = 718,980.56 × 171,595.58
  4. Step 4: Simplify right side
    479,355.80x = 123,373,886,201.93
  5. Step 5: Solve for x
    x = 123,373,886,201.93/479,355.80
  6. Step 6: Final answer
    x = 257,374.35

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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.