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Finding the Fourth Proportional to 4,920.55, 7,366.19 and 4,914.07

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Solution

The fourth proportional to 4,920.55, 7,366.19 and 4,914.07 is: 7,356.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.55 : 7,366.19 = 4,914.07 : x
  2. Step 2: Convert to fraction form
    4,920.55/7,366.19 = 4,914.07/x
  3. Step 3: Cross multiply
    4,920.55x = 7,366.19 × 4,914.07
  4. Step 4: Simplify right side
    4,920.55x = 36,197,936.46
  5. Step 5: Solve for x
    x = 36,197,936.46/4,920.55
  6. Step 6: Final answer
    x = 7,356.49

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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.