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Finding the Fourth Proportional to 218,892.90, 328,157.10 and 92,630.10

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Solution

The fourth proportional to 218,892.90, 328,157.10 and 92,630.10 is: 138,868.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,892.90 : 328,157.10 = 92,630.10 : x
  2. Step 2: Convert to fraction form
    218,892.90/328,157.10 = 92,630.10/x
  3. Step 3: Cross multiply
    218,892.90x = 328,157.10 × 92,630.10
  4. Step 4: Simplify right side
    218,892.90x = 30,397,224,988.71
  5. Step 5: Solve for x
    x = 30,397,224,988.71/218,892.90
  6. Step 6: Final answer
    x = 138,868.03

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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.