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Finding the Fourth Proportional to 71,335.21, 98,440.35 and 39,068.41

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Solution

The fourth proportional to 71,335.21, 98,440.35 and 39,068.41 is: 53,913.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,335.21 : 98,440.35 = 39,068.41 : x
  2. Step 2: Convert to fraction form
    71,335.21/98,440.35 = 39,068.41/x
  3. Step 3: Cross multiply
    71,335.21x = 98,440.35 × 39,068.41
  4. Step 4: Simplify right side
    71,335.21x = 3,845,907,954.34
  5. Step 5: Solve for x
    x = 3,845,907,954.34/71,335.21
  6. Step 6: Final answer
    x = 53,913.18

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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.