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Finding the Fourth Proportional to 1,859,555.50, 2,788,059.85 and 946,971.47

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Solution

The fourth proportional to 1,859,555.50, 2,788,059.85 and 946,971.47 is: 1,419,808.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859,555.50 : 2,788,059.85 = 946,971.47 : x
  2. Step 2: Convert to fraction form
    1,859,555.50/2,788,059.85 = 946,971.47/x
  3. Step 3: Cross multiply
    1,859,555.50x = 2,788,059.85 × 946,971.47
  4. Step 4: Simplify right side
    1,859,555.50x = 2,640,213,139,205.20
  5. Step 5: Solve for x
    x = 2,640,213,139,205.20/1,859,555.50
  6. Step 6: Final answer
    x = 1,419,808.74

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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.