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Finding the Fourth Proportional to 1,295,203.20, 1,942,804.80 and 1,058,812.80

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Solution

The fourth proportional to 1,295,203.20, 1,942,804.80 and 1,058,812.80 is: 1,588,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,203.20 : 1,942,804.80 = 1,058,812.80 : x
  2. Step 2: Convert to fraction form
    1,295,203.20/1,942,804.80 = 1,058,812.80/x
  3. Step 3: Cross multiply
    1,295,203.20x = 1,942,804.80 × 1,058,812.80
  4. Step 4: Simplify right side
    1,295,203.20x = 2,057,066,590,141.44
  5. Step 5: Solve for x
    x = 2,057,066,590,141.44/1,295,203.20
  6. Step 6: Final answer
    x = 1,588,219.20

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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.