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Finding the Fourth Proportional to 316,852.90, 475,310.40 and 92,215.60

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Solution

The fourth proportional to 316,852.90, 475,310.40 and 92,215.60 is: 138,332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,852.90 : 475,310.40 = 92,215.60 : x
  2. Step 2: Convert to fraction form
    316,852.90/475,310.40 = 92,215.60/x
  3. Step 3: Cross multiply
    316,852.90x = 475,310.40 × 92,215.60
  4. Step 4: Simplify right side
    316,852.90x = 43,831,033,722.24
  5. Step 5: Solve for x
    x = 43,831,033,722.24/316,852.90
  6. Step 6: Final answer
    x = 138,332.44

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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.