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Finding the Fourth Proportional to 86,367,071.20, 129,550,606.80 and 86,367,071.20

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Solution

The fourth proportional to 86,367,071.20, 129,550,606.80 and 86,367,071.20 is: 129,550,606.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,367,071.20 : 129,550,606.80 = 86,367,071.20 : x
  2. Step 2: Convert to fraction form
    86,367,071.20/129,550,606.80 = 86,367,071.20/x
  3. Step 3: Cross multiply
    86,367,071.20x = 129,550,606.80 × 86,367,071.20
  4. Step 4: Simplify right side
    86,367,071.20x = 11,188,906,481,498,804
  5. Step 5: Solve for x
    x = 11,188,906,481,498,804/86,367,071.20
  6. Step 6: Final answer
    x = 129,550,606.80

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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.