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Finding the Fourth Proportional to 115,404.80, 173,123.40 and 36,510.80

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Solution

The fourth proportional to 115,404.80, 173,123.40 and 36,510.80 is: 54,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,404.80 : 173,123.40 = 36,510.80 : x
  2. Step 2: Convert to fraction form
    115,404.80/173,123.40 = 36,510.80/x
  3. Step 3: Cross multiply
    115,404.80x = 173,123.40 × 36,510.80
  4. Step 4: Simplify right side
    115,404.80x = 6,320,873,832.72
  5. Step 5: Solve for x
    x = 6,320,873,832.72/115,404.80
  6. Step 6: Final answer
    x = 54,771.33

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1.5x scale

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.