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Finding the Fourth Proportional to 351,574.90, 485,173.50 and 190,429.45

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Solution

The fourth proportional to 351,574.90, 485,173.50 and 190,429.45 is: 262,792.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,574.90 : 485,173.50 = 190,429.45 : x
  2. Step 2: Convert to fraction form
    351,574.90/485,173.50 = 190,429.45/x
  3. Step 3: Cross multiply
    351,574.90x = 485,173.50 × 190,429.45
  4. Step 4: Simplify right side
    351,574.90x = 92,391,320,832.53
  5. Step 5: Solve for x
    x = 92,391,320,832.53/351,574.90
  6. Step 6: Final answer
    x = 262,792.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.