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Finding the Fourth Proportional to 79,279,246.80, 118,883,440.80 and 30,740,968.80

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Solution

The fourth proportional to 79,279,246.80, 118,883,440.80 and 30,740,968.80 is: 46,097,715.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,279,246.80 : 118,883,440.80 = 30,740,968.80 : x
  2. Step 2: Convert to fraction form
    79,279,246.80/118,883,440.80 = 30,740,968.80/x
  3. Step 3: Cross multiply
    79,279,246.80x = 118,883,440.80 × 30,740,968.80
  4. Step 4: Simplify right side
    79,279,246.80x = 3,654,592,144,469,447
  5. Step 5: Solve for x
    x = 3,654,592,144,469,447/79,279,246.80
  6. Step 6: Final answer
    x = 46,097,715.25

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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.