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Finding the Fourth Proportional to 110,639,379.60, 155,121,879.60 and 110,639,379.60

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Solution

The fourth proportional to 110,639,379.60, 155,121,879.60 and 110,639,379.60 is: 155,121,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,639,379.60 : 155,121,879.60 = 110,639,379.60 : x
  2. Step 2: Convert to fraction form
    110,639,379.60/155,121,879.60 = 110,639,379.60/x
  3. Step 3: Cross multiply
    110,639,379.60x = 155,121,879.60 × 110,639,379.60
  4. Step 4: Simplify right side
    110,639,379.60x = 17,162,588,521,329,894
  5. Step 5: Solve for x
    x = 17,162,588,521,329,894/110,639,379.60
  6. Step 6: Final answer
    x = 155,121,879.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.