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Finding the Fourth Proportional to 64,419.40, 96,629.10 and 62,086.60

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Solution

The fourth proportional to 64,419.40, 96,629.10 and 62,086.60 is: 93,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,419.40 : 96,629.10 = 62,086.60 : x
  2. Step 2: Convert to fraction form
    64,419.40/96,629.10 = 62,086.60/x
  3. Step 3: Cross multiply
    64,419.40x = 96,629.10 × 62,086.60
  4. Step 4: Simplify right side
    64,419.40x = 5,999,372,280.06
  5. Step 5: Solve for x
    x = 5,999,372,280.06/64,419.40
  6. Step 6: Final answer
    x = 93,129.90

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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.