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Finding the Fourth Proportional to 118,891,805.70, 178,337,708.55 and 118,891,805.70

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Solution

The fourth proportional to 118,891,805.70, 178,337,708.55 and 118,891,805.70 is: 178,337,708.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,891,805.70 : 178,337,708.55 = 118,891,805.70 : x
  2. Step 2: Convert to fraction form
    118,891,805.70/178,337,708.55 = 118,891,805.70/x
  3. Step 3: Cross multiply
    118,891,805.70x = 178,337,708.55 × 118,891,805.70
  4. Step 4: Simplify right side
    118,891,805.70x = 21,202,892,193,909,832
  5. Step 5: Solve for x
    x = 21,202,892,193,909,832/118,891,805.70
  6. Step 6: Final answer
    x = 178,337,708.55

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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.