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Finding the Fourth Proportional to 191,738,898.70, 287,608,348.05 and 133,067,812.30

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Solution

The fourth proportional to 191,738,898.70, 287,608,348.05 and 133,067,812.30 is: 199,601,718.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,738,898.70 : 287,608,348.05 = 133,067,812.30 : x
  2. Step 2: Convert to fraction form
    191,738,898.70/287,608,348.05 = 133,067,812.30/x
  3. Step 3: Cross multiply
    191,738,898.70x = 287,608,348.05 × 133,067,812.30
  4. Step 4: Simplify right side
    191,738,898.70x = 38,271,413,674,230,472
  5. Step 5: Solve for x
    x = 38,271,413,674,230,472/191,738,898.70
  6. Step 6: Final answer
    x = 199,601,718.45

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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.