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Finding the Fourth Proportional to 267,345.21, 401,068.40 and 107,433.60

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Solution

The fourth proportional to 267,345.21, 401,068.40 and 107,433.60 is: 161,170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,345.21 : 401,068.40 = 107,433.60 : x
  2. Step 2: Convert to fraction form
    267,345.21/401,068.40 = 107,433.60/x
  3. Step 3: Cross multiply
    267,345.21x = 401,068.40 × 107,433.60
  4. Step 4: Simplify right side
    267,345.21x = 43,088,219,784.31
  5. Step 5: Solve for x
    x = 43,088,219,784.31/267,345.21
  6. Step 6: Final answer
    x = 161,170.72

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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.