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Finding the Fourth Proportional to 316,661.16, 436,993.08 and 171,468.54

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Solution

The fourth proportional to 316,661.16, 436,993.08 and 171,468.54 is: 236,626.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,661.16 : 436,993.08 = 171,468.54 : x
  2. Step 2: Convert to fraction form
    316,661.16/436,993.08 = 171,468.54/x
  3. Step 3: Cross multiply
    316,661.16x = 436,993.08 × 171,468.54
  4. Step 4: Simplify right side
    316,661.16x = 74,930,565,417.70
  5. Step 5: Solve for x
    x = 74,930,565,417.70/316,661.16
  6. Step 6: Final answer
    x = 236,626.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.