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Finding the Fourth Proportional to 425,635,262.20, 638,452,893.30 and 425,635,262.20

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Solution

The fourth proportional to 425,635,262.20, 638,452,893.30 and 425,635,262.20 is: 638,452,893.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,635,262.20 : 638,452,893.30 = 425,635,262.20 : x
  2. Step 2: Convert to fraction form
    425,635,262.20/638,452,893.30 = 425,635,262.20/x
  3. Step 3: Cross multiply
    425,635,262.20x = 638,452,893.30 × 425,635,262.20
  4. Step 4: Simplify right side
    425,635,262.20x = 271,748,064,642,094,080
  5. Step 5: Solve for x
    x = 271,748,064,642,094,080/425,635,262.20
  6. Step 6: Final answer
    x = 638,452,893.30

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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.