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Finding the Fourth Proportional to 381,074.15, 571,925.69 and 191,588.37

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Solution

The fourth proportional to 381,074.15, 571,925.69 and 191,588.37 is: 287,540.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,074.15 : 571,925.69 = 191,588.37 : x
  2. Step 2: Convert to fraction form
    381,074.15/571,925.69 = 191,588.37/x
  3. Step 3: Cross multiply
    381,074.15x = 571,925.69 × 191,588.37
  4. Step 4: Simplify right side
    381,074.15x = 109,574,312,618.79
  5. Step 5: Solve for x
    x = 109,574,312,618.79/381,074.15
  6. Step 6: Final answer
    x = 287,540.66

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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.