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Finding the Fourth Proportional to 21,025,276.20, 31,537,914.30 and 21,025,276.20

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Solution

The fourth proportional to 21,025,276.20, 31,537,914.30 and 21,025,276.20 is: 31,537,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025,276.20 : 31,537,914.30 = 21,025,276.20 : x
  2. Step 2: Convert to fraction form
    21,025,276.20/31,537,914.30 = 21,025,276.20/x
  3. Step 3: Cross multiply
    21,025,276.20x = 31,537,914.30 × 21,025,276.20
  4. Step 4: Simplify right side
    21,025,276.20x = 663,093,358,929,429.62
  5. Step 5: Solve for x
    x = 663,093,358,929,429.62/21,025,276.20
  6. Step 6: Final answer
    x = 31,537,914.30

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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.