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Finding the Fourth Proportional to 4,986.73, 7,421.23 and 4,820.63

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Solution

The fourth proportional to 4,986.73, 7,421.23 and 4,820.63 is: 7,174.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.73 : 7,421.23 = 4,820.63 : x
  2. Step 2: Convert to fraction form
    4,986.73/7,421.23 = 4,820.63/x
  3. Step 3: Cross multiply
    4,986.73x = 7,421.23 × 4,820.63
  4. Step 4: Simplify right side
    4,986.73x = 35,774,954.82
  5. Step 5: Solve for x
    x = 35,774,954.82/4,986.73
  6. Step 6: Final answer
    x = 7,174.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.