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Finding the Fourth Proportional to 84,890.98, 117,147.45 and 47,165.32

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Solution

The fourth proportional to 84,890.98, 117,147.45 and 47,165.32 is: 65,086.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,890.98 : 117,147.45 = 47,165.32 : x
  2. Step 2: Convert to fraction form
    84,890.98/117,147.45 = 47,165.32/x
  3. Step 3: Cross multiply
    84,890.98x = 117,147.45 × 47,165.32
  4. Step 4: Simplify right side
    84,890.98x = 5,525,296,966.43
  5. Step 5: Solve for x
    x = 5,525,296,966.43/84,890.98
  6. Step 6: Final answer
    x = 65,086.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.