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Finding the Fourth Proportional to 1,411,325.78, 1,947,619.18 and 766,751.27

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Solution

The fourth proportional to 1,411,325.78, 1,947,619.18 and 766,751.27 is: 1,058,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,325.78 : 1,947,619.18 = 766,751.27 : x
  2. Step 2: Convert to fraction form
    1,411,325.78/1,947,619.18 = 766,751.27/x
  3. Step 3: Cross multiply
    1,411,325.78x = 1,947,619.18 × 766,751.27
  4. Step 4: Simplify right side
    1,411,325.78x = 1,493,339,470,961.70
  5. Step 5: Solve for x
    x = 1,493,339,470,961.70/1,411,325.78
  6. Step 6: Final answer
    x = 1,058,111.10

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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.