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Finding the Fourth Proportional to 84,826, 117,064.74 and 47,102.68

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Solution

The fourth proportional to 84,826, 117,064.74 and 47,102.68 is: 65,004.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,826 : 117,064.74 = 47,102.68 : x
  2. Step 2: Convert to fraction form
    84,826/117,064.74 = 47,102.68/x
  3. Step 3: Cross multiply
    84,826x = 117,064.74 × 47,102.68
  4. Step 4: Simplify right side
    84,826x = 5,514,062,987.50
  5. Step 5: Solve for x
    x = 5,514,062,987.50/84,826
  6. Step 6: Final answer
    x = 65,004.40

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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.