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Finding the Fourth Proportional to 371,987.44, 557,897.32 and 105,742.06

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Solution

The fourth proportional to 371,987.44, 557,897.32 and 105,742.06 is: 158,589.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,987.44 : 557,897.32 = 105,742.06 : x
  2. Step 2: Convert to fraction form
    371,987.44/557,897.32 = 105,742.06/x
  3. Step 3: Cross multiply
    371,987.44x = 557,897.32 × 105,742.06
  4. Step 4: Simplify right side
    371,987.44x = 58,993,211,885.28
  5. Step 5: Solve for x
    x = 58,993,211,885.28/371,987.44
  6. Step 6: Final answer
    x = 158,589.26

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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.