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Finding the Fourth Proportional to 64,405.54, 88,681.67 and 55,892.64

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Solution

The fourth proportional to 64,405.54, 88,681.67 and 55,892.64 is: 76,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,405.54 : 88,681.67 = 55,892.64 : x
  2. Step 2: Convert to fraction form
    64,405.54/88,681.67 = 55,892.64/x
  3. Step 3: Cross multiply
    64,405.54x = 88,681.67 × 55,892.64
  4. Step 4: Simplify right side
    64,405.54x = 4,956,652,918.60
  5. Step 5: Solve for x
    x = 4,956,652,918.60/64,405.54
  6. Step 6: Final answer
    x = 76,960.04

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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.