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Finding the Fourth Proportional to 124,562.70, 186,844.05 and 102,692.70

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Solution

The fourth proportional to 124,562.70, 186,844.05 and 102,692.70 is: 154,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,562.70 : 186,844.05 = 102,692.70 : x
  2. Step 2: Convert to fraction form
    124,562.70/186,844.05 = 102,692.70/x
  3. Step 3: Cross multiply
    124,562.70x = 186,844.05 × 102,692.70
  4. Step 4: Simplify right side
    124,562.70x = 19,187,519,973.44
  5. Step 5: Solve for x
    x = 19,187,519,973.44/124,562.70
  6. Step 6: Final answer
    x = 154,039.05

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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.