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Finding the Fourth Proportional to 65,626.80, 98,436.76 and 18,877.84

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Solution

The fourth proportional to 65,626.80, 98,436.76 and 18,877.84 is: 28,315.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,626.80 : 98,436.76 = 18,877.84 : x
  2. Step 2: Convert to fraction form
    65,626.80/98,436.76 = 18,877.84/x
  3. Step 3: Cross multiply
    65,626.80x = 98,436.76 × 18,877.84
  4. Step 4: Simplify right side
    65,626.80x = 1,858,273,405.40
  5. Step 5: Solve for x
    x = 1,858,273,405.40/65,626.80
  6. Step 6: Final answer
    x = 28,315.77

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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.