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Finding the Fourth Proportional to 169,431.75, 233,826.75 and 93,980.25

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Solution

The fourth proportional to 169,431.75, 233,826.75 and 93,980.25 is: 129,698.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,431.75 : 233,826.75 = 93,980.25 : x
  2. Step 2: Convert to fraction form
    169,431.75/233,826.75 = 93,980.25/x
  3. Step 3: Cross multiply
    169,431.75x = 233,826.75 × 93,980.25
  4. Step 4: Simplify right side
    169,431.75x = 21,975,096,421.69
  5. Step 5: Solve for x
    x = 21,975,096,421.69/169,431.75
  6. Step 6: Final answer
    x = 129,698.81

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Double scale
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Similar ratio
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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.