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Finding the Fourth Proportional to 316,290.44, 436,480.29 and 173,051.05

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Solution

The fourth proportional to 316,290.44, 436,480.29 and 173,051.05 is: 238,810.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,290.44 : 436,480.29 = 173,051.05 : x
  2. Step 2: Convert to fraction form
    316,290.44/436,480.29 = 173,051.05/x
  3. Step 3: Cross multiply
    316,290.44x = 436,480.29 × 173,051.05
  4. Step 4: Simplify right side
    316,290.44x = 75,533,372,488.80
  5. Step 5: Solve for x
    x = 75,533,372,488.80/316,290.44
  6. Step 6: Final answer
    x = 238,810.17

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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.