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Finding the Fourth Proportional to 21,264,704.20, 31,897,056.30 and 21,264,704.20

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Solution

The fourth proportional to 21,264,704.20, 31,897,056.30 and 21,264,704.20 is: 31,897,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,264,704.20 : 31,897,056.30 = 21,264,704.20 : x
  2. Step 2: Convert to fraction form
    21,264,704.20/31,897,056.30 = 21,264,704.20/x
  3. Step 3: Cross multiply
    21,264,704.20x = 31,897,056.30 × 21,264,704.20
  4. Step 4: Simplify right side
    21,264,704.20x = 678,281,467,070,246.50
  5. Step 5: Solve for x
    x = 678,281,467,070,246.50/21,264,704.20
  6. Step 6: Final answer
    x = 31,897,056.30

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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.