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Finding the Fourth Proportional to 316,287.59, 436,476.60 and 173,048.20

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Solution

The fourth proportional to 316,287.59, 436,476.60 and 173,048.20 is: 238,806.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,287.59 : 436,476.60 = 173,048.20 : x
  2. Step 2: Convert to fraction form
    316,287.59/436,476.60 = 173,048.20/x
  3. Step 3: Cross multiply
    316,287.59x = 436,476.60 × 173,048.20
  4. Step 4: Simplify right side
    316,287.59x = 75,531,488,880.93
  5. Step 5: Solve for x
    x = 75,531,488,880.93/316,287.59
  6. Step 6: Final answer
    x = 238,806.37

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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.