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Finding the Fourth Proportional to 124,433.80, 186,674.70 and 53,355.40

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Solution

The fourth proportional to 124,433.80, 186,674.70 and 53,355.40 is: 80,043.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,433.80 : 186,674.70 = 53,355.40 : x
  2. Step 2: Convert to fraction form
    124,433.80/186,674.70 = 53,355.40/x
  3. Step 3: Cross multiply
    124,433.80x = 186,674.70 × 53,355.40
  4. Step 4: Simplify right side
    124,433.80x = 9,960,103,288.38
  5. Step 5: Solve for x
    x = 9,960,103,288.38/124,433.80
  6. Step 6: Final answer
    x = 80,043.39

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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.