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Finding the Fourth Proportional to 30,585.33, 42,220.71 and 18,652.95

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Solution

The fourth proportional to 30,585.33, 42,220.71 and 18,652.95 is: 25,748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,585.33 : 42,220.71 = 18,652.95 : x
  2. Step 2: Convert to fraction form
    30,585.33/42,220.71 = 18,652.95/x
  3. Step 3: Cross multiply
    30,585.33x = 42,220.71 × 18,652.95
  4. Step 4: Simplify right side
    30,585.33x = 787,540,792.59
  5. Step 5: Solve for x
    x = 787,540,792.59/30,585.33
  6. Step 6: Final answer
    x = 25,748.97

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.