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Finding the Fourth Proportional to 64,938.44, 97,404.60 and 20,567.72

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Solution

The fourth proportional to 64,938.44, 97,404.60 and 20,567.72 is: 30,850.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,938.44 : 97,404.60 = 20,567.72 : x
  2. Step 2: Convert to fraction form
    64,938.44/97,404.60 = 20,567.72/x
  3. Step 3: Cross multiply
    64,938.44x = 97,404.60 × 20,567.72
  4. Step 4: Simplify right side
    64,938.44x = 2,003,390,539.51
  5. Step 5: Solve for x
    x = 2,003,390,539.51/64,938.44
  6. Step 6: Final answer
    x = 30,850.61

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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.