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Finding the Fourth Proportional to 11,702,979.80, 17,554,469.70 and 11,535,018.20

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Solution

The fourth proportional to 11,702,979.80, 17,554,469.70 and 11,535,018.20 is: 17,302,527.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,702,979.80 : 17,554,469.70 = 11,535,018.20 : x
  2. Step 2: Convert to fraction form
    11,702,979.80/17,554,469.70 = 11,535,018.20/x
  3. Step 3: Cross multiply
    11,702,979.80x = 17,554,469.70 × 11,535,018.20
  4. Step 4: Simplify right side
    11,702,979.80x = 202,491,127,480,848.53
  5. Step 5: Solve for x
    x = 202,491,127,480,848.53/11,702,979.80
  6. Step 6: Final answer
    x = 17,302,527.30

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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.