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Finding the Fourth Proportional to 352,093.80, 528,140.70 and 313,386.60

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Solution

The fourth proportional to 352,093.80, 528,140.70 and 313,386.60 is: 470,079.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,093.80 : 528,140.70 = 313,386.60 : x
  2. Step 2: Convert to fraction form
    352,093.80/528,140.70 = 313,386.60/x
  3. Step 3: Cross multiply
    352,093.80x = 528,140.70 × 313,386.60
  4. Step 4: Simplify right side
    352,093.80x = 165,512,218,294.62
  5. Step 5: Solve for x
    x = 165,512,218,294.62/352,093.80
  6. Step 6: Final answer
    x = 470,079.90

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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.