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Finding the Fourth Proportional to 874,542.88, 1,311,814.56 and 675,154.32

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Solution

The fourth proportional to 874,542.88, 1,311,814.56 and 675,154.32 is: 1,012,731.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,542.88 : 1,311,814.56 = 675,154.32 : x
  2. Step 2: Convert to fraction form
    874,542.88/1,311,814.56 = 675,154.32/x
  3. Step 3: Cross multiply
    874,542.88x = 1,311,814.56 × 675,154.32
  4. Step 4: Simplify right side
    874,542.88x = 885,677,267,222.90
  5. Step 5: Solve for x
    x = 885,677,267,222.90/874,542.88
  6. Step 6: Final answer
    x = 1,012,731.67

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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.