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Finding the Fourth Proportional to 637,617.99, 879,945.40 and 361,995.16

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Solution

The fourth proportional to 637,617.99, 879,945.40 and 361,995.16 is: 499,571.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,617.99 : 879,945.40 = 361,995.16 : x
  2. Step 2: Convert to fraction form
    637,617.99/879,945.40 = 361,995.16/x
  3. Step 3: Cross multiply
    637,617.99x = 879,945.40 × 361,995.16
  4. Step 4: Simplify right side
    637,617.99x = 318,535,972,759.41
  5. Step 5: Solve for x
    x = 318,535,972,759.41/637,617.99
  6. Step 6: Final answer
    x = 499,571.81

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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.