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Finding the Fourth Proportional to 212,616,186.80, 298,468,877.20 and 212,616,186.80

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Solution

The fourth proportional to 212,616,186.80, 298,468,877.20 and 212,616,186.80 is: 298,468,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,616,186.80 : 298,468,877.20 = 212,616,186.80 : x
  2. Step 2: Convert to fraction form
    212,616,186.80/298,468,877.20 = 212,616,186.80/x
  3. Step 3: Cross multiply
    212,616,186.80x = 298,468,877.20 × 212,616,186.80
  4. Step 4: Simplify right side
    212,616,186.80x = 63,459,314,548,741,464
  5. Step 5: Solve for x
    x = 63,459,314,548,741,464/212,616,186.80
  6. Step 6: Final answer
    x = 298,468,877.20

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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.