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Finding the Fourth Proportional to 136,503.20, 205,192.20 and 97,331.60

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Solution

The fourth proportional to 136,503.20, 205,192.20 and 97,331.60 is: 146,309.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,503.20 : 205,192.20 = 97,331.60 : x
  2. Step 2: Convert to fraction form
    136,503.20/205,192.20 = 97,331.60/x
  3. Step 3: Cross multiply
    136,503.20x = 205,192.20 × 97,331.60
  4. Step 4: Simplify right side
    136,503.20x = 19,971,685,133.52
  5. Step 5: Solve for x
    x = 19,971,685,133.52/136,503.20
  6. Step 6: Final answer
    x = 146,309.28

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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.