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Finding the Fourth Proportional to 7,242.49, 9,994.82 and 4,055.76

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Solution

The fourth proportional to 7,242.49, 9,994.82 and 4,055.76 is: 5,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.49 : 9,994.82 = 4,055.76 : x
  2. Step 2: Convert to fraction form
    7,242.49/9,994.82 = 4,055.76/x
  3. Step 3: Cross multiply
    7,242.49x = 9,994.82 × 4,055.76
  4. Step 4: Simplify right side
    7,242.49x = 40,536,570.88
  5. Step 5: Solve for x
    x = 40,536,570.88/7,242.49
  6. Step 6: Final answer
    x = 5,597.05

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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.