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Finding the Fourth Proportional to 222,638.64, 333,961.60 and 64,875.72

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Solution

The fourth proportional to 222,638.64, 333,961.60 and 64,875.72 is: 97,314.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,638.64 : 333,961.60 = 64,875.72 : x
  2. Step 2: Convert to fraction form
    222,638.64/333,961.60 = 64,875.72/x
  3. Step 3: Cross multiply
    222,638.64x = 333,961.60 × 64,875.72
  4. Step 4: Simplify right side
    222,638.64x = 21,665,999,252.35
  5. Step 5: Solve for x
    x = 21,665,999,252.35/222,638.64
  6. Step 6: Final answer
    x = 97,314.64

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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.