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Finding the Fourth Proportional to 124,021.80, 186,075.90 and 53,951.40

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Solution

The fourth proportional to 124,021.80, 186,075.90 and 53,951.40 is: 80,945.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,021.80 : 186,075.90 = 53,951.40 : x
  2. Step 2: Convert to fraction form
    124,021.80/186,075.90 = 53,951.40/x
  3. Step 3: Cross multiply
    124,021.80x = 186,075.90 × 53,951.40
  4. Step 4: Simplify right side
    124,021.80x = 10,039,055,311.26
  5. Step 5: Solve for x
    x = 10,039,055,311.26/124,021.80
  6. Step 6: Final answer
    x = 80,945.89

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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.