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Finding the Fourth Proportional to 316,904.90, 475,388.40 and 92,267.60

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Solution

The fourth proportional to 316,904.90, 475,388.40 and 92,267.60 is: 138,410.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,904.90 : 475,388.40 = 92,267.60 : x
  2. Step 2: Convert to fraction form
    316,904.90/475,388.40 = 92,267.60/x
  3. Step 3: Cross multiply
    316,904.90x = 475,388.40 × 92,267.60
  4. Step 4: Simplify right side
    316,904.90x = 43,862,946,735.84
  5. Step 5: Solve for x
    x = 43,862,946,735.84/316,904.90
  6. Step 6: Final answer
    x = 138,410.44

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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.