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Finding the Fourth Proportional to 64,199.64, 88,558.38 and 38,688.60

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Solution

The fourth proportional to 64,199.64, 88,558.38 and 38,688.60 is: 53,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,199.64 : 88,558.38 = 38,688.60 : x
  2. Step 2: Convert to fraction form
    64,199.64/88,558.38 = 38,688.60/x
  3. Step 3: Cross multiply
    64,199.64x = 88,558.38 × 38,688.60
  4. Step 4: Simplify right side
    64,199.64x = 3,426,199,740.47
  5. Step 5: Solve for x
    x = 3,426,199,740.47/64,199.64
  6. Step 6: Final answer
    x = 53,367.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.