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Finding the Fourth Proportional to 5,368.80, 7,408.80 and 3,010.80

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Solution

The fourth proportional to 5,368.80, 7,408.80 and 3,010.80 is: 4,154.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,368.80 : 7,408.80 = 3,010.80 : x
  2. Step 2: Convert to fraction form
    5,368.80/7,408.80 = 3,010.80/x
  3. Step 3: Cross multiply
    5,368.80x = 7,408.80 × 3,010.80
  4. Step 4: Simplify right side
    5,368.80x = 22,306,415.04
  5. Step 5: Solve for x
    x = 22,306,415.04/5,368.80
  6. Step 6: Final answer
    x = 4,154.82

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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.