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Finding the Fourth Proportional to 109,962.40, 164,871.60 and 43,362.40

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Solution

The fourth proportional to 109,962.40, 164,871.60 and 43,362.40 is: 65,015.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,962.40 : 164,871.60 = 43,362.40 : x
  2. Step 2: Convert to fraction form
    109,962.40/164,871.60 = 43,362.40/x
  3. Step 3: Cross multiply
    109,962.40x = 164,871.60 × 43,362.40
  4. Step 4: Simplify right side
    109,962.40x = 7,149,228,267.84
  5. Step 5: Solve for x
    x = 7,149,228,267.84/109,962.40
  6. Step 6: Final answer
    x = 65,015.21

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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.