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Finding the Fourth Proportional to 9,881.70, 14,822.55 and 2,956.20

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Solution

The fourth proportional to 9,881.70, 14,822.55 and 2,956.20 is: 4,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,881.70 : 14,822.55 = 2,956.20 : x
  2. Step 2: Convert to fraction form
    9,881.70/14,822.55 = 2,956.20/x
  3. Step 3: Cross multiply
    9,881.70x = 14,822.55 × 2,956.20
  4. Step 4: Simplify right side
    9,881.70x = 43,818,422.31
  5. Step 5: Solve for x
    x = 43,818,422.31/9,881.70
  6. Step 6: Final answer
    x = 4,434.30

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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.