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Finding the Fourth Proportional to 8,798,879.20, 13,187,821.20 and 7,896,085.60

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Solution

The fourth proportional to 8,798,879.20, 13,187,821.20 and 7,896,085.60 is: 11,834,707.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798,879.20 : 13,187,821.20 = 7,896,085.60 : x
  2. Step 2: Convert to fraction form
    8,798,879.20/13,187,821.20 = 7,896,085.60/x
  3. Step 3: Cross multiply
    8,798,879.20x = 13,187,821.20 × 7,896,085.60
  4. Step 4: Simplify right side
    8,798,879.20x = 104,132,165,072,694.70
  5. Step 5: Solve for x
    x = 104,132,165,072,694.70/8,798,879.20
  6. Step 6: Final answer
    x = 11,834,707.89

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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.