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Finding the Fourth Proportional to 316,651.64, 436,980.66 and 173,412.68

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Solution

The fourth proportional to 316,651.64, 436,980.66 and 173,412.68 is: 239,310.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,651.64 : 436,980.66 = 173,412.68 : x
  2. Step 2: Convert to fraction form
    316,651.64/436,980.66 = 173,412.68/x
  3. Step 3: Cross multiply
    316,651.64x = 436,980.66 × 173,412.68
  4. Step 4: Simplify right side
    316,651.64x = 75,777,987,358.77
  5. Step 5: Solve for x
    x = 75,777,987,358.77/316,651.64
  6. Step 6: Final answer
    x = 239,310.26

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1.5x scale

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.