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Finding the Fourth Proportional to 72,914.43, 100,608.44 and 42,698.19

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Solution

The fourth proportional to 72,914.43, 100,608.44 and 42,698.19 is: 58,915.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,914.43 : 100,608.44 = 42,698.19 : x
  2. Step 2: Convert to fraction form
    72,914.43/100,608.44 = 42,698.19/x
  3. Step 3: Cross multiply
    72,914.43x = 100,608.44 × 42,698.19
  4. Step 4: Simplify right side
    72,914.43x = 4,295,798,073.23
  5. Step 5: Solve for x
    x = 4,295,798,073.23/72,914.43
  6. Step 6: Final answer
    x = 58,915.61

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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.