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Finding the Fourth Proportional to 98,676.53, 136,173.60 and 53,354.50

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Solution

The fourth proportional to 98,676.53, 136,173.60 and 53,354.50 is: 73,629.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,676.53 : 136,173.60 = 53,354.50 : x
  2. Step 2: Convert to fraction form
    98,676.53/136,173.60 = 53,354.50/x
  3. Step 3: Cross multiply
    98,676.53x = 136,173.60 × 53,354.50
  4. Step 4: Simplify right side
    98,676.53x = 7,265,474,341.20
  5. Step 5: Solve for x
    x = 7,265,474,341.20/98,676.53
  6. Step 6: Final answer
    x = 73,629.20

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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.