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Finding the Fourth Proportional to 7,381,811.10, 11,072,716.65 and 7,381,811.10

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Solution

The fourth proportional to 7,381,811.10, 11,072,716.65 and 7,381,811.10 is: 11,072,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381,811.10 : 11,072,716.65 = 7,381,811.10 : x
  2. Step 2: Convert to fraction form
    7,381,811.10/11,072,716.65 = 7,381,811.10/x
  3. Step 3: Cross multiply
    7,381,811.10x = 11,072,716.65 × 7,381,811.10
  4. Step 4: Simplify right side
    7,381,811.10x = 81,736,702,674,124.81
  5. Step 5: Solve for x
    x = 81,736,702,674,124.81/7,381,811.10
  6. Step 6: Final answer
    x = 11,072,716.65

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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.