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Finding the Fourth Proportional to 101,805.71, 140,574.42 and 63,609.75

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Solution

The fourth proportional to 101,805.71, 140,574.42 and 63,609.75 is: 87,833.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,805.71 : 140,574.42 = 63,609.75 : x
  2. Step 2: Convert to fraction form
    101,805.71/140,574.42 = 63,609.75/x
  3. Step 3: Cross multiply
    101,805.71x = 140,574.42 × 63,609.75
  4. Step 4: Simplify right side
    101,805.71x = 8,941,903,712.60
  5. Step 5: Solve for x
    x = 8,941,903,712.60/101,805.71
  6. Step 6: Final answer
    x = 87,833.03

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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.