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Finding the Fourth Proportional to 35,280.94, 48,692.19 and 20,376.94

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Solution

The fourth proportional to 35,280.94, 48,692.19 and 20,376.94 is: 28,122.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,280.94 : 48,692.19 = 20,376.94 : x
  2. Step 2: Convert to fraction form
    35,280.94/48,692.19 = 20,376.94/x
  3. Step 3: Cross multiply
    35,280.94x = 48,692.19 × 20,376.94
  4. Step 4: Simplify right side
    35,280.94x = 992,197,834.10
  5. Step 5: Solve for x
    x = 992,197,834.10/35,280.94
  6. Step 6: Final answer
    x = 28,122.77

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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.