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Finding the Fourth Proportional to 112,339,640.40, 168,509,460.60 and 112,339,640.40

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Solution

The fourth proportional to 112,339,640.40, 168,509,460.60 and 112,339,640.40 is: 168,509,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,339,640.40 : 168,509,460.60 = 112,339,640.40 : x
  2. Step 2: Convert to fraction form
    112,339,640.40/168,509,460.60 = 112,339,640.40/x
  3. Step 3: Cross multiply
    112,339,640.40x = 168,509,460.60 × 112,339,640.40
  4. Step 4: Simplify right side
    112,339,640.40x = 18,930,292,207,801,968
  5. Step 5: Solve for x
    x = 18,930,292,207,801,968/112,339,640.40
  6. Step 6: Final answer
    x = 168,509,460.60

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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.