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Finding the Fourth Proportional to 9,989.52, 14,985.36 and 4,796.88

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Solution

The fourth proportional to 9,989.52, 14,985.36 and 4,796.88 is: 7,195.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.52 : 14,985.36 = 4,796.88 : x
  2. Step 2: Convert to fraction form
    9,989.52/14,985.36 = 4,796.88/x
  3. Step 3: Cross multiply
    9,989.52x = 14,985.36 × 4,796.88
  4. Step 4: Simplify right side
    9,989.52x = 71,882,973.68
  5. Step 5: Solve for x
    x = 71,882,973.68/9,989.52
  6. Step 6: Final answer
    x = 7,195.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.