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Finding the Fourth Proportional to 354,343.60, 531,175.20 and 117,564.40

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Solution

The fourth proportional to 354,343.60, 531,175.20 and 117,564.40 is: 176,233.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,343.60 : 531,175.20 = 117,564.40 : x
  2. Step 2: Convert to fraction form
    354,343.60/531,175.20 = 117,564.40/x
  3. Step 3: Cross multiply
    354,343.60x = 531,175.20 × 117,564.40
  4. Step 4: Simplify right side
    354,343.60x = 62,447,293,682.88
  5. Step 5: Solve for x
    x = 62,447,293,682.88/354,343.60
  6. Step 6: Final answer
    x = 176,233.73

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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.