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Finding the Fourth Proportional to 1,859,561.43, 2,788,068.69 and 946,977.36

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Solution

The fourth proportional to 1,859,561.43, 2,788,068.69 and 946,977.36 is: 1,419,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859,561.43 : 2,788,068.69 = 946,977.36 : x
  2. Step 2: Convert to fraction form
    1,859,561.43/2,788,068.69 = 946,977.36/x
  3. Step 3: Cross multiply
    1,859,561.43x = 2,788,068.69 × 946,977.36
  4. Step 4: Simplify right side
    1,859,561.43x = 2,640,237,927,554.86
  5. Step 5: Solve for x
    x = 2,640,237,927,554.86/1,859,561.43
  6. Step 6: Final answer
    x = 1,419,817.54

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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.