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Finding the Fourth Proportional to 2,692.48, 3,715.68 and 1,513.68

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Solution

The fourth proportional to 2,692.48, 3,715.68 and 1,513.68 is: 2,088.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.48 : 3,715.68 = 1,513.68 : x
  2. Step 2: Convert to fraction form
    2,692.48/3,715.68 = 1,513.68/x
  3. Step 3: Cross multiply
    2,692.48x = 3,715.68 × 1,513.68
  4. Step 4: Simplify right side
    2,692.48x = 5,624,350.50
  5. Step 5: Solve for x
    x = 5,624,350.50/2,692.48
  6. Step 6: Final answer
    x = 2,088.91

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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.