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Finding the Fourth Proportional to 9,860.67, 13,612.12 and 7,672.88

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Solution

The fourth proportional to 9,860.67, 13,612.12 and 7,672.88 is: 10,592.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,860.67 : 13,612.12 = 7,672.88 : x
  2. Step 2: Convert to fraction form
    9,860.67/13,612.12 = 7,672.88/x
  3. Step 3: Cross multiply
    9,860.67x = 13,612.12 × 7,672.88
  4. Step 4: Simplify right side
    9,860.67x = 104,444,178.15
  5. Step 5: Solve for x
    x = 104,444,178.15/9,860.67
  6. Step 6: Final answer
    x = 10,592.00

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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.