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Finding the Fourth Proportional to 19,956,856.80, 29,935,285.20 and 19,956,856.80

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Solution

The fourth proportional to 19,956,856.80, 29,935,285.20 and 19,956,856.80 is: 29,935,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956,856.80 : 29,935,285.20 = 19,956,856.80 : x
  2. Step 2: Convert to fraction form
    19,956,856.80/29,935,285.20 = 19,956,856.80/x
  3. Step 3: Cross multiply
    19,956,856.80x = 29,935,285.20 × 19,956,856.80
  4. Step 4: Simplify right side
    19,956,856.80x = 597,414,200,003,559.38
  5. Step 5: Solve for x
    x = 597,414,200,003,559.38/19,956,856.80
  6. Step 6: Final answer
    x = 29,935,285.20

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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.