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Finding the Fourth Proportional to 158,394.42, 218,622.65 and 97,928.60

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Solution

The fourth proportional to 158,394.42, 218,622.65 and 97,928.60 is: 135,165.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,394.42 : 218,622.65 = 97,928.60 : x
  2. Step 2: Convert to fraction form
    158,394.42/218,622.65 = 97,928.60/x
  3. Step 3: Cross multiply
    158,394.42x = 218,622.65 × 97,928.60
  4. Step 4: Simplify right side
    158,394.42x = 21,409,408,460.03
  5. Step 5: Solve for x
    x = 21,409,408,460.03/158,394.42
  6. Step 6: Final answer
    x = 135,165.17

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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.