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Finding the Fourth Proportional to 64,892.40, 97,144.20 and 38,583.60

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Solution

The fourth proportional to 64,892.40, 97,144.20 and 38,583.60 is: 57,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,892.40 : 97,144.20 = 38,583.60 : x
  2. Step 2: Convert to fraction form
    64,892.40/97,144.20 = 38,583.60/x
  3. Step 3: Cross multiply
    64,892.40x = 97,144.20 × 38,583.60
  4. Step 4: Simplify right side
    64,892.40x = 3,748,172,955.12
  5. Step 5: Solve for x
    x = 3,748,172,955.12/64,892.40
  6. Step 6: Final answer
    x = 57,759.81

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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.