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Finding the Fourth Proportional to 27,681.99, 38,203.95 and 16,355.15

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Solution

The fourth proportional to 27,681.99, 38,203.95 and 16,355.15 is: 22,571.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,681.99 : 38,203.95 = 16,355.15 : x
  2. Step 2: Convert to fraction form
    27,681.99/38,203.95 = 16,355.15/x
  3. Step 3: Cross multiply
    27,681.99x = 38,203.95 × 16,355.15
  4. Step 4: Simplify right side
    27,681.99x = 624,831,346.42
  5. Step 5: Solve for x
    x = 624,831,346.42/27,681.99
  6. Step 6: Final answer
    x = 22,571.77

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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.