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Finding the Fourth Proportional to 84,890,273.70, 127,335,410.55 and 27,384,420.90

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Solution

The fourth proportional to 84,890,273.70, 127,335,410.55 and 27,384,420.90 is: 41,076,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,890,273.70 : 127,335,410.55 = 27,384,420.90 : x
  2. Step 2: Convert to fraction form
    84,890,273.70/127,335,410.55 = 27,384,420.90/x
  3. Step 3: Cross multiply
    84,890,273.70x = 127,335,410.55 × 27,384,420.90
  4. Step 4: Simplify right side
    84,890,273.70x = 3,487,006,477,975,500
  5. Step 5: Solve for x
    x = 3,487,006,477,975,500/84,890,273.70
  6. Step 6: Final answer
    x = 41,076,631.35

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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.