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Finding the Fourth Proportional to 605,340,672.70, 908,011,009.05 and 168,708,747.10

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Solution

The fourth proportional to 605,340,672.70, 908,011,009.05 and 168,708,747.10 is: 253,063,120.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,340,672.70 : 908,011,009.05 = 168,708,747.10 : x
  2. Step 2: Convert to fraction form
    605,340,672.70/908,011,009.05 = 168,708,747.10/x
  3. Step 3: Cross multiply
    605,340,672.70x = 908,011,009.05 × 168,708,747.10
  4. Step 4: Simplify right side
    605,340,672.70x = 153,189,399,689,832,256
  5. Step 5: Solve for x
    x = 153,189,399,689,832,256/605,340,672.70
  6. Step 6: Final answer
    x = 253,063,120.65

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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.