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Finding the Fourth Proportional to 235,728.18, 325,366.11 and 149,728.50

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Solution

The fourth proportional to 235,728.18, 325,366.11 and 149,728.50 is: 206,664.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,728.18 : 325,366.11 = 149,728.50 : x
  2. Step 2: Convert to fraction form
    235,728.18/325,366.11 = 149,728.50/x
  3. Step 3: Cross multiply
    235,728.18x = 325,366.11 × 149,728.50
  4. Step 4: Simplify right side
    235,728.18x = 48,716,579,601.14
  5. Step 5: Solve for x
    x = 48,716,579,601.14/235,728.18
  6. Step 6: Final answer
    x = 206,664.22

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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.