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Finding the Fourth Proportional to 39,143.75, 53,978.67 and 33,497.24

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Solution

The fourth proportional to 39,143.75, 53,978.67 and 33,497.24 is: 46,192.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,143.75 : 53,978.67 = 33,497.24 : x
  2. Step 2: Convert to fraction form
    39,143.75/53,978.67 = 33,497.24/x
  3. Step 3: Cross multiply
    39,143.75x = 53,978.67 × 33,497.24
  4. Step 4: Simplify right side
    39,143.75x = 1,808,136,193.98
  5. Step 5: Solve for x
    x = 1,808,136,193.98/39,143.75
  6. Step 6: Final answer
    x = 46,192.21

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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.