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Finding the Fourth Proportional to 22,146,828.30, 30,929,976.90 and 22,146,828.30

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Solution

The fourth proportional to 22,146,828.30, 30,929,976.90 and 22,146,828.30 is: 30,929,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,146,828.30 : 30,929,976.90 = 22,146,828.30 : x
  2. Step 2: Convert to fraction form
    22,146,828.30/30,929,976.90 = 22,146,828.30/x
  3. Step 3: Cross multiply
    22,146,828.30x = 30,929,976.90 × 22,146,828.30
  4. Step 4: Simplify right side
    22,146,828.30x = 685,000,887,727,266.25
  5. Step 5: Solve for x
    x = 685,000,887,727,266.25/22,146,828.30
  6. Step 6: Final answer
    x = 30,929,976.90

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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.