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Finding the Fourth Proportional to 123,061.40, 184,592.10 and 66,928.40

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Solution

The fourth proportional to 123,061.40, 184,592.10 and 66,928.40 is: 100,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,061.40 : 184,592.10 = 66,928.40 : x
  2. Step 2: Convert to fraction form
    123,061.40/184,592.10 = 66,928.40/x
  3. Step 3: Cross multiply
    123,061.40x = 184,592.10 × 66,928.40
  4. Step 4: Simplify right side
    123,061.40x = 12,354,453,905.64
  5. Step 5: Solve for x
    x = 12,354,453,905.64/123,061.40
  6. Step 6: Final answer
    x = 100,392.60

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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.