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Finding the Fourth Proportional to 393,985,608.60, 590,978,412.90 and 106,771,272.60

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Solution

The fourth proportional to 393,985,608.60, 590,978,412.90 and 106,771,272.60 is: 160,156,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,985,608.60 : 590,978,412.90 = 106,771,272.60 : x
  2. Step 2: Convert to fraction form
    393,985,608.60/590,978,412.90 = 106,771,272.60/x
  3. Step 3: Cross multiply
    393,985,608.60x = 590,978,412.90 × 106,771,272.60
  4. Step 4: Simplify right side
    393,985,608.60x = 63,099,517,224,461,248
  5. Step 5: Solve for x
    x = 63,099,517,224,461,248/393,985,608.60
  6. Step 6: Final answer
    x = 160,156,908.90

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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.