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Finding the Fourth Proportional to 67,228.20, 92,574.81 and 65,736.40

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Solution

The fourth proportional to 67,228.20, 92,574.81 and 65,736.40 is: 90,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,228.20 : 92,574.81 = 65,736.40 : x
  2. Step 2: Convert to fraction form
    67,228.20/92,574.81 = 65,736.40/x
  3. Step 3: Cross multiply
    67,228.20x = 92,574.81 × 65,736.40
  4. Step 4: Simplify right side
    67,228.20x = 6,085,534,740.08
  5. Step 5: Solve for x
    x = 6,085,534,740.08/67,228.20
  6. Step 6: Final answer
    x = 90,520.57

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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.