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Finding the Fourth Proportional to 318,816,052.80, 478,224,079.20 and 318,816,052.80

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Solution

The fourth proportional to 318,816,052.80, 478,224,079.20 and 318,816,052.80 is: 478,224,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,816,052.80 : 478,224,079.20 = 318,816,052.80 : x
  2. Step 2: Convert to fraction form
    318,816,052.80/478,224,079.20 = 318,816,052.80/x
  3. Step 3: Cross multiply
    318,816,052.80x = 478,224,079.20 × 318,816,052.80
  4. Step 4: Simplify right side
    318,816,052.80x = 152,465,513,284,458,592
  5. Step 5: Solve for x
    x = 152,465,513,284,458,592/318,816,052.80
  6. Step 6: Final answer
    x = 478,224,079.20

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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.