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Finding the Fourth Proportional to 11,208,428.80, 16,786,071.15 and 11,208,428.80

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Solution

The fourth proportional to 11,208,428.80, 16,786,071.15 and 11,208,428.80 is: 16,786,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,208,428.80 : 16,786,071.15 = 11,208,428.80 : x
  2. Step 2: Convert to fraction form
    11,208,428.80/16,786,071.15 = 11,208,428.80/x
  3. Step 3: Cross multiply
    11,208,428.80x = 16,786,071.15 × 11,208,428.80
  4. Step 4: Simplify right side
    11,208,428.80x = 188,145,483,316,509.12
  5. Step 5: Solve for x
    x = 188,145,483,316,509.12/11,208,428.80
  6. Step 6: Final answer
    x = 16,786,071.15

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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.