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Finding the Fourth Proportional to 12,858.98, 17,748.96 and 7,482.46

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Solution

The fourth proportional to 12,858.98, 17,748.96 and 7,482.46 is: 10,327.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.98 : 17,748.96 = 7,482.46 : x
  2. Step 2: Convert to fraction form
    12,858.98/17,748.96 = 7,482.46/x
  3. Step 3: Cross multiply
    12,858.98x = 17,748.96 × 7,482.46
  4. Step 4: Simplify right side
    12,858.98x = 132,805,883.24
  5. Step 5: Solve for x
    x = 132,805,883.24/12,858.98
  6. Step 6: Final answer
    x = 10,327.87

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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.