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Finding the Fourth Proportional to 1,368,318, 1,888,337.16 and 764,706

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Solution

The fourth proportional to 1,368,318, 1,888,337.16 and 764,706 is: 1,055,326.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368,318 : 1,888,337.16 = 764,706 : x
  2. Step 2: Convert to fraction form
    1,368,318/1,888,337.16 = 764,706/x
  3. Step 3: Cross multiply
    1,368,318x = 1,888,337.16 × 764,706
  4. Step 4: Simplify right side
    1,368,318x = 1,444,022,756,274.96
  5. Step 5: Solve for x
    x = 1,444,022,756,274.96/1,368,318
  6. Step 6: Final answer
    x = 1,055,326.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.