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Finding the Fourth Proportional to 7,402.70, 10,212.66 and 4,849.74

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Solution

The fourth proportional to 7,402.70, 10,212.66 and 4,849.74 is: 6,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,402.70 : 10,212.66 = 4,849.74 : x
  2. Step 2: Convert to fraction form
    7,402.70/10,212.66 = 4,849.74/x
  3. Step 3: Cross multiply
    7,402.70x = 10,212.66 × 4,849.74
  4. Step 4: Simplify right side
    7,402.70x = 49,528,745.71
  5. Step 5: Solve for x
    x = 49,528,745.71/7,402.70
  6. Step 6: Final answer
    x = 6,690.63

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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.