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Finding the Fourth Proportional to 103,672.19, 155,466.43 and 40,483.28

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Solution

The fourth proportional to 103,672.19, 155,466.43 and 40,483.28 is: 60,708.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,672.19 : 155,466.43 = 40,483.28 : x
  2. Step 2: Convert to fraction form
    103,672.19/155,466.43 = 40,483.28/x
  3. Step 3: Cross multiply
    103,672.19x = 155,466.43 × 40,483.28
  4. Step 4: Simplify right side
    103,672.19x = 6,293,791,016.29
  5. Step 5: Solve for x
    x = 6,293,791,016.29/103,672.19
  6. Step 6: Final answer
    x = 60,708.58

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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.