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Finding the Fourth Proportional to 352,912.40, 529,368.60 and 313,254.80

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Solution

The fourth proportional to 352,912.40, 529,368.60 and 313,254.80 is: 469,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,912.40 : 529,368.60 = 313,254.80 : x
  2. Step 2: Convert to fraction form
    352,912.40/529,368.60 = 313,254.80/x
  3. Step 3: Cross multiply
    352,912.40x = 529,368.60 × 313,254.80
  4. Step 4: Simplify right side
    352,912.40x = 165,827,254,919.28
  5. Step 5: Solve for x
    x = 165,827,254,919.28/352,912.40
  6. Step 6: Final answer
    x = 469,882.20

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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.