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Finding the Fourth Proportional to 33,428.98, 46,129.98 and 18,318.63

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Solution

The fourth proportional to 33,428.98, 46,129.98 and 18,318.63 is: 25,278.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,428.98 : 46,129.98 = 18,318.63 : x
  2. Step 2: Convert to fraction form
    33,428.98/46,129.98 = 18,318.63/x
  3. Step 3: Cross multiply
    33,428.98x = 46,129.98 × 18,318.63
  4. Step 4: Simplify right side
    33,428.98x = 845,038,035.53
  5. Step 5: Solve for x
    x = 845,038,035.53/33,428.98
  6. Step 6: Final answer
    x = 25,278.61

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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.