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Finding the Fourth Proportional to 115,858.76, 159,902.18 and 73,421.16

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Solution

The fourth proportional to 115,858.76, 159,902.18 and 73,421.16 is: 101,332.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,858.76 : 159,902.18 = 73,421.16 : x
  2. Step 2: Convert to fraction form
    115,858.76/159,902.18 = 73,421.16/x
  3. Step 3: Cross multiply
    115,858.76x = 159,902.18 × 73,421.16
  4. Step 4: Simplify right side
    115,858.76x = 11,740,203,542.13
  5. Step 5: Solve for x
    x = 11,740,203,542.13/115,858.76
  6. Step 6: Final answer
    x = 101,332.03

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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.