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Finding the Fourth Proportional to 1,919,513.88, 2,648,930.58 and 1,048,360.50

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Solution

The fourth proportional to 1,919,513.88, 2,648,930.58 and 1,048,360.50 is: 1,446,738.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,513.88 : 2,648,930.58 = 1,048,360.50 : x
  2. Step 2: Convert to fraction form
    1,919,513.88/2,648,930.58 = 1,048,360.50/x
  3. Step 3: Cross multiply
    1,919,513.88x = 2,648,930.58 × 1,048,360.50
  4. Step 4: Simplify right side
    1,919,513.88x = 2,777,034,187,314.09
  5. Step 5: Solve for x
    x = 2,777,034,187,314.09/1,919,513.88
  6. Step 6: Final answer
    x = 1,446,738.27

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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.