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Finding the Fourth Proportional to 1,004,118.03, 1,385,336.49 and 641,754

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Solution

The fourth proportional to 1,004,118.03, 1,385,336.49 and 641,754 is: 885,399.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004,118.03 : 1,385,336.49 = 641,754 : x
  2. Step 2: Convert to fraction form
    1,004,118.03/1,385,336.49 = 641,754/x
  3. Step 3: Cross multiply
    1,004,118.03x = 1,385,336.49 × 641,754
  4. Step 4: Simplify right side
    1,004,118.03x = 889,045,233,803.46
  5. Step 5: Solve for x
    x = 889,045,233,803.46/1,004,118.03
  6. Step 6: Final answer
    x = 885,399.13

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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.