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Finding the Fourth Proportional to 127,694,857.60, 191,504,961.60 and 45,804,246.40

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Solution

The fourth proportional to 127,694,857.60, 191,504,961.60 and 45,804,246.40 is: 68,692,981.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,694,857.60 : 191,504,961.60 = 45,804,246.40 : x
  2. Step 2: Convert to fraction form
    127,694,857.60/191,504,961.60 = 45,804,246.40/x
  3. Step 3: Cross multiply
    127,694,857.60x = 191,504,961.60 × 45,804,246.40
  4. Step 4: Simplify right side
    127,694,857.60x = 8,771,740,447,948,938
  5. Step 5: Solve for x
    x = 8,771,740,447,948,938/127,694,857.60
  6. Step 6: Final answer
    x = 68,692,981.16

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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.