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Finding the Fourth Proportional to 21,288,069.80, 31,932,104.70 and 21,288,069.80

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Solution

The fourth proportional to 21,288,069.80, 31,932,104.70 and 21,288,069.80 is: 31,932,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288,069.80 : 31,932,104.70 = 21,288,069.80 : x
  2. Step 2: Convert to fraction form
    21,288,069.80/31,932,104.70 = 21,288,069.80/x
  3. Step 3: Cross multiply
    21,288,069.80x = 31,932,104.70 × 21,288,069.80
  4. Step 4: Simplify right side
    21,288,069.80x = 679,772,873,714,508.12
  5. Step 5: Solve for x
    x = 679,772,873,714,508.12/21,288,069.80
  6. Step 6: Final answer
    x = 31,932,104.70

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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.