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Finding the Fourth Proportional to 340,705.80, 511,058.70 and 104,048.10

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Solution

The fourth proportional to 340,705.80, 511,058.70 and 104,048.10 is: 156,072.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,705.80 : 511,058.70 = 104,048.10 : x
  2. Step 2: Convert to fraction form
    340,705.80/511,058.70 = 104,048.10/x
  3. Step 3: Cross multiply
    340,705.80x = 511,058.70 × 104,048.10
  4. Step 4: Simplify right side
    340,705.80x = 53,174,686,723.47
  5. Step 5: Solve for x
    x = 53,174,686,723.47/340,705.80
  6. Step 6: Final answer
    x = 156,072.15

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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.