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Finding the Fourth Proportional to 115,859.76, 159,903.56 and 73,422.16

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Solution

The fourth proportional to 115,859.76, 159,903.56 and 73,422.16 is: 101,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,859.76 : 159,903.56 = 73,422.16 : x
  2. Step 2: Convert to fraction form
    115,859.76/159,903.56 = 73,422.16/x
  3. Step 3: Cross multiply
    115,859.76x = 159,903.56 × 73,422.16
  4. Step 4: Simplify right side
    115,859.76x = 11,740,464,766.89
  5. Step 5: Solve for x
    x = 11,740,464,766.89/115,859.76
  6. Step 6: Final answer
    x = 101,333.41

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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.