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Finding the Fourth Proportional to 60,690.85, 91,035.78 and 18,570.76

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Solution

The fourth proportional to 60,690.85, 91,035.78 and 18,570.76 is: 27,855.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,690.85 : 91,035.78 = 18,570.76 : x
  2. Step 2: Convert to fraction form
    60,690.85/91,035.78 = 18,570.76/x
  3. Step 3: Cross multiply
    60,690.85x = 91,035.78 × 18,570.76
  4. Step 4: Simplify right side
    60,690.85x = 1,690,603,621.79
  5. Step 5: Solve for x
    x = 1,690,603,621.79/60,690.85
  6. Step 6: Final answer
    x = 27,855.99

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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.