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Finding the Fourth Proportional to 84,699.92, 116,889 and 51,159.44

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Solution

The fourth proportional to 84,699.92, 116,889 and 51,159.44 is: 70,601.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,699.92 : 116,889 = 51,159.44 : x
  2. Step 2: Convert to fraction form
    84,699.92/116,889 = 51,159.44/x
  3. Step 3: Cross multiply
    84,699.92x = 116,889 × 51,159.44
  4. Step 4: Simplify right side
    84,699.92x = 5,979,975,782.16
  5. Step 5: Solve for x
    x = 5,979,975,782.16/84,699.92
  6. Step 6: Final answer
    x = 70,601.91

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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.