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Finding the Fourth Proportional to 115,936.80, 174,116.40 and 101,421.60

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Solution

The fourth proportional to 115,936.80, 174,116.40 and 101,421.60 is: 152,317.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,936.80 : 174,116.40 = 101,421.60 : x
  2. Step 2: Convert to fraction form
    115,936.80/174,116.40 = 101,421.60/x
  3. Step 3: Cross multiply
    115,936.80x = 174,116.40 × 101,421.60
  4. Step 4: Simplify right side
    115,936.80x = 17,659,163,874.24
  5. Step 5: Solve for x
    x = 17,659,163,874.24/115,936.80
  6. Step 6: Final answer
    x = 152,317.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.