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Finding the Fourth Proportional to 18,683,416.40, 28,036,934.40 and 11,007,046.40

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Solution

The fourth proportional to 18,683,416.40, 28,036,934.40 and 11,007,046.40 is: 16,517,527.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683,416.40 : 28,036,934.40 = 11,007,046.40 : x
  2. Step 2: Convert to fraction form
    18,683,416.40/28,036,934.40 = 11,007,046.40/x
  3. Step 3: Cross multiply
    18,683,416.40x = 28,036,934.40 × 11,007,046.40
  4. Step 4: Simplify right side
    18,683,416.40x = 308,603,837,854,556.12
  5. Step 5: Solve for x
    x = 308,603,837,854,556.12/18,683,416.40
  6. Step 6: Final answer
    x = 16,517,527.16

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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.