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Finding the Fourth Proportional to 32,838.84, 45,318.15 and 18,693

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Solution

The fourth proportional to 32,838.84, 45,318.15 and 18,693 is: 25,796.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,838.84 : 45,318.15 = 18,693 : x
  2. Step 2: Convert to fraction form
    32,838.84/45,318.15 = 18,693/x
  3. Step 3: Cross multiply
    32,838.84x = 45,318.15 × 18,693
  4. Step 4: Simplify right side
    32,838.84x = 847,132,177.95
  5. Step 5: Solve for x
    x = 847,132,177.95/32,838.84
  6. Step 6: Final answer
    x = 25,796.65

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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.