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Finding the Fourth Proportional to 318,816,097.80, 478,224,146.70 and 318,816,097.80

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Solution

The fourth proportional to 318,816,097.80, 478,224,146.70 and 318,816,097.80 is: 478,224,146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,816,097.80 : 478,224,146.70 = 318,816,097.80 : x
  2. Step 2: Convert to fraction form
    318,816,097.80/478,224,146.70 = 318,816,097.80/x
  3. Step 3: Cross multiply
    318,816,097.80x = 478,224,146.70 × 318,816,097.80
  4. Step 4: Simplify right side
    318,816,097.80x = 152,465,556,324,628,736
  5. Step 5: Solve for x
    x = 152,465,556,324,628,736/318,816,097.80
  6. Step 6: Final answer
    x = 478,224,146.70

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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.