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Finding the Fourth Proportional to 18,792.40, 28,187.16 and 4,941.04

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Solution

The fourth proportional to 18,792.40, 28,187.16 and 4,941.04 is: 7,411.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.40 : 28,187.16 = 4,941.04 : x
  2. Step 2: Convert to fraction form
    18,792.40/28,187.16 = 4,941.04/x
  3. Step 3: Cross multiply
    18,792.40x = 28,187.16 × 4,941.04
  4. Step 4: Simplify right side
    18,792.40x = 139,273,885.05
  5. Step 5: Solve for x
    x = 139,273,885.05/18,792.40
  6. Step 6: Final answer
    x = 7,411.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.