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Finding the Fourth Proportional to 449,064,051.20, 627,159,121.60 and 449,064,051.20

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Solution

The fourth proportional to 449,064,051.20, 627,159,121.60 and 449,064,051.20 is: 627,159,121.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,064,051.20 : 627,159,121.60 = 449,064,051.20 : x
  2. Step 2: Convert to fraction form
    449,064,051.20/627,159,121.60 = 449,064,051.20/x
  3. Step 3: Cross multiply
    449,064,051.20x = 627,159,121.60 × 449,064,051.20
  4. Step 4: Simplify right side
    449,064,051.20x = 281,634,615,892,729,440
  5. Step 5: Solve for x
    x = 281,634,615,892,729,440/449,064,051.20
  6. Step 6: Final answer
    x = 627,159,121.60

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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.