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Finding the Fourth Proportional to 363,938.40, 545,923.80 and 124,048.80

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Solution

The fourth proportional to 363,938.40, 545,923.80 and 124,048.80 is: 186,078.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,938.40 : 545,923.80 = 124,048.80 : x
  2. Step 2: Convert to fraction form
    363,938.40/545,923.80 = 124,048.80/x
  3. Step 3: Cross multiply
    363,938.40x = 545,923.80 × 124,048.80
  4. Step 4: Simplify right side
    363,938.40x = 67,721,192,281.44
  5. Step 5: Solve for x
    x = 67,721,192,281.44/363,938.40
  6. Step 6: Final answer
    x = 186,078.72

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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.