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Finding the Fourth Proportional to 348,028.90, 486,190.70 and 348,028.90

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Solution

The fourth proportional to 348,028.90, 486,190.70 and 348,028.90 is: 486,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,028.90 : 486,190.70 = 348,028.90 : x
  2. Step 2: Convert to fraction form
    348,028.90/486,190.70 = 348,028.90/x
  3. Step 3: Cross multiply
    348,028.90x = 486,190.70 × 348,028.90
  4. Step 4: Simplify right side
    348,028.90x = 169,208,414,511.23
  5. Step 5: Solve for x
    x = 169,208,414,511.23/348,028.90
  6. Step 6: Final answer
    x = 486,190.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.