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Finding the Fourth Proportional to 79,729,272.30, 111,923,312.10 and 79,729,272.30

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Solution

The fourth proportional to 79,729,272.30, 111,923,312.10 and 79,729,272.30 is: 111,923,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,729,272.30 : 111,923,312.10 = 79,729,272.30 : x
  2. Step 2: Convert to fraction form
    79,729,272.30/111,923,312.10 = 79,729,272.30/x
  3. Step 3: Cross multiply
    79,729,272.30x = 111,923,312.10 × 79,729,272.30
  4. Step 4: Simplify right side
    79,729,272.30x = 8,923,564,227,138,784
  5. Step 5: Solve for x
    x = 8,923,564,227,138,784/79,729,272.30
  6. Step 6: Final answer
    x = 111,923,312.10

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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.