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Finding the Fourth Proportional to 221,815,986.30, 332,723,979.45 and 221,815,986.30

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Solution

The fourth proportional to 221,815,986.30, 332,723,979.45 and 221,815,986.30 is: 332,723,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,815,986.30 : 332,723,979.45 = 221,815,986.30 : x
  2. Step 2: Convert to fraction form
    221,815,986.30/332,723,979.45 = 221,815,986.30/x
  3. Step 3: Cross multiply
    221,815,986.30x = 332,723,979.45 × 221,815,986.30
  4. Step 4: Simplify right side
    221,815,986.30x = 73,803,497,667,362,688
  5. Step 5: Solve for x
    x = 73,803,497,667,362,688/221,815,986.30
  6. Step 6: Final answer
    x = 332,723,979.45

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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.