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Finding the Fourth Proportional to 358,792.40, 538,145.40 and 148,408.40

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Solution

The fourth proportional to 358,792.40, 538,145.40 and 148,408.40 is: 222,594.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,792.40 : 538,145.40 = 148,408.40 : x
  2. Step 2: Convert to fraction form
    358,792.40/538,145.40 = 148,408.40/x
  3. Step 3: Cross multiply
    358,792.40x = 538,145.40 × 148,408.40
  4. Step 4: Simplify right side
    358,792.40x = 79,865,297,781.36
  5. Step 5: Solve for x
    x = 79,865,297,781.36/358,792.40
  6. Step 6: Final answer
    x = 222,594.73

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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.