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Finding the Fourth Proportional to 207,431.76, 310,885.20 and 132,522.96

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Solution

The fourth proportional to 207,431.76, 310,885.20 and 132,522.96 is: 198,616.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,431.76 : 310,885.20 = 132,522.96 : x
  2. Step 2: Convert to fraction form
    207,431.76/310,885.20 = 132,522.96/x
  3. Step 3: Cross multiply
    207,431.76x = 310,885.20 × 132,522.96
  4. Step 4: Simplify right side
    207,431.76x = 41,199,426,924.19
  5. Step 5: Solve for x
    x = 41,199,426,924.19/207,431.76
  6. Step 6: Final answer
    x = 198,616.77

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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.