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Finding the Fourth Proportional to 79,731,090.30, 111,925,857.30 and 79,731,090.30

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Solution

The fourth proportional to 79,731,090.30, 111,925,857.30 and 79,731,090.30 is: 111,925,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,731,090.30 : 111,925,857.30 = 79,731,090.30 : x
  2. Step 2: Convert to fraction form
    79,731,090.30/111,925,857.30 = 79,731,090.30/x
  3. Step 3: Cross multiply
    79,731,090.30x = 111,925,857.30 × 79,731,090.30
  4. Step 4: Simplify right side
    79,731,090.30x = 8,923,970,635,291,214
  5. Step 5: Solve for x
    x = 8,923,970,635,291,214/79,731,090.30
  6. Step 6: Final answer
    x = 111,925,857.30

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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.