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Finding the Fourth Proportional to 84,879.99, 117,143.28 and 47,154.24

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Solution

The fourth proportional to 84,879.99, 117,143.28 and 47,154.24 is: 65,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,879.99 : 117,143.28 = 47,154.24 : x
  2. Step 2: Convert to fraction form
    84,879.99/117,143.28 = 47,154.24/x
  3. Step 3: Cross multiply
    84,879.99x = 117,143.28 × 47,154.24
  4. Step 4: Simplify right side
    84,879.99x = 5,523,802,339.51
  5. Step 5: Solve for x
    x = 5,523,802,339.51/84,879.99
  6. Step 6: Final answer
    x = 65,077.79

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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.