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Finding the Fourth Proportional to 9,993.60, 14,973.86 and 8,963.42

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Solution

The fourth proportional to 9,993.60, 14,973.86 and 8,963.42 is: 13,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,993.60 : 14,973.86 = 8,963.42 : x
  2. Step 2: Convert to fraction form
    9,993.60/14,973.86 = 8,963.42/x
  3. Step 3: Cross multiply
    9,993.60x = 14,973.86 × 8,963.42
  4. Step 4: Simplify right side
    9,993.60x = 134,216,996.20
  5. Step 5: Solve for x
    x = 134,216,996.20/9,993.60
  6. Step 6: Final answer
    x = 13,430.30

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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.