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Finding the Fourth Proportional to 133,887,612.80, 200,736,940.80 and 61,139,244.80

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Solution

The fourth proportional to 133,887,612.80, 200,736,940.80 and 61,139,244.80 is: 91,665,724.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,887,612.80 : 200,736,940.80 = 61,139,244.80 : x
  2. Step 2: Convert to fraction form
    133,887,612.80/200,736,940.80 = 61,139,244.80/x
  3. Step 3: Cross multiply
    133,887,612.80x = 200,736,940.80 × 61,139,244.80
  4. Step 4: Simplify right side
    133,887,612.80x = 12,272,904,963,974,308
  5. Step 5: Solve for x
    x = 12,272,904,963,974,308/133,887,612.80
  6. Step 6: Final answer
    x = 91,665,724.02

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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.