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Finding the Fourth Proportional to 14,607.64, 20,158.53 and 7,983.64

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Solution

The fourth proportional to 14,607.64, 20,158.53 and 7,983.64 is: 11,017.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,607.64 : 20,158.53 = 7,983.64 : x
  2. Step 2: Convert to fraction form
    14,607.64/20,158.53 = 7,983.64/x
  3. Step 3: Cross multiply
    14,607.64x = 20,158.53 × 7,983.64
  4. Step 4: Simplify right side
    14,607.64x = 160,938,446.45
  5. Step 5: Solve for x
    x = 160,938,446.45/14,607.64
  6. Step 6: Final answer
    x = 11,017.42

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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.