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Finding the Fourth Proportional to 14,607.17, 20,157.84 and 7,892.78

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Solution

The fourth proportional to 14,607.17, 20,157.84 and 7,892.78 is: 10,892.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,607.17 : 20,157.84 = 7,892.78 : x
  2. Step 2: Convert to fraction form
    14,607.17/20,157.84 = 7,892.78/x
  3. Step 3: Cross multiply
    14,607.17x = 20,157.84 × 7,892.78
  4. Step 4: Simplify right side
    14,607.17x = 159,101,488.79
  5. Step 5: Solve for x
    x = 159,101,488.79/14,607.17
  6. Step 6: Final answer
    x = 10,892.01

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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.