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Finding the Fourth Proportional to 213,179.04, 319,739.40 and 63,442.44

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Solution

The fourth proportional to 213,179.04, 319,739.40 and 63,442.44 is: 95,154.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,179.04 : 319,739.40 = 63,442.44 : x
  2. Step 2: Convert to fraction form
    213,179.04/319,739.40 = 63,442.44/x
  3. Step 3: Cross multiply
    213,179.04x = 319,739.40 × 63,442.44
  4. Step 4: Simplify right side
    213,179.04x = 20,285,047,700.14
  5. Step 5: Solve for x
    x = 20,285,047,700.14/213,179.04
  6. Step 6: Final answer
    x = 95,154.98

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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.