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Finding the Fourth Proportional to 81,453,855.40, 122,180,783.10 and 81,453,855.40

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Solution

The fourth proportional to 81,453,855.40, 122,180,783.10 and 81,453,855.40 is: 122,180,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,453,855.40 : 122,180,783.10 = 81,453,855.40 : x
  2. Step 2: Convert to fraction form
    81,453,855.40/122,180,783.10 = 81,453,855.40/x
  3. Step 3: Cross multiply
    81,453,855.40x = 122,180,783.10 × 81,453,855.40
  4. Step 4: Simplify right side
    81,453,855.40x = 9,952,095,839,286,164
  5. Step 5: Solve for x
    x = 9,952,095,839,286,164/81,453,855.40
  6. Step 6: Final answer
    x = 122,180,783.10

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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.