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Finding the Fourth Proportional to 1,014.88, 1,401.12 and 704.80

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Solution

The fourth proportional to 1,014.88, 1,401.12 and 704.80 is: 973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.88 : 1,401.12 = 704.80 : x
  2. Step 2: Convert to fraction form
    1,014.88/1,401.12 = 704.80/x
  3. Step 3: Cross multiply
    1,014.88x = 1,401.12 × 704.80
  4. Step 4: Simplify right side
    1,014.88x = 987,509.38
  5. Step 5: Solve for x
    x = 987,509.38/1,014.88
  6. Step 6: Final answer
    x = 973.03

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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.