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Finding the Fourth Proportional to 1,964,019.51, 2,709,940.50 and 1,148,065.40

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Solution

The fourth proportional to 1,964,019.51, 2,709,940.50 and 1,148,065.40 is: 1,584,092.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964,019.51 : 2,709,940.50 = 1,148,065.40 : x
  2. Step 2: Convert to fraction form
    1,964,019.51/2,709,940.50 = 1,148,065.40/x
  3. Step 3: Cross multiply
    1,964,019.51x = 2,709,940.50 × 1,148,065.40
  4. Step 4: Simplify right side
    1,964,019.51x = 3,111,188,910,559.00
  5. Step 5: Solve for x
    x = 3,111,188,910,559.00/1,964,019.51
  6. Step 6: Final answer
    x = 1,584,092.67

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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.