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Finding the Fourth Proportional to 9,266.88, 12,788.36 and 5,075.12

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Solution

The fourth proportional to 9,266.88, 12,788.36 and 5,075.12 is: 7,003.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,266.88 : 12,788.36 = 5,075.12 : x
  2. Step 2: Convert to fraction form
    9,266.88/12,788.36 = 5,075.12/x
  3. Step 3: Cross multiply
    9,266.88x = 12,788.36 × 5,075.12
  4. Step 4: Simplify right side
    9,266.88x = 64,902,461.60
  5. Step 5: Solve for x
    x = 64,902,461.60/9,266.88
  6. Step 6: Final answer
    x = 7,003.70

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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.