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Finding the Fourth Proportional to 571,835.89, 856,671.10 and 381,722.95

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Solution

The fourth proportional to 571,835.89, 856,671.10 and 381,722.95 is: 571,861.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,835.89 : 856,671.10 = 381,722.95 : x
  2. Step 2: Convert to fraction form
    571,835.89/856,671.10 = 381,722.95/x
  3. Step 3: Cross multiply
    571,835.89x = 856,671.10 × 381,722.95
  4. Step 4: Simplify right side
    571,835.89x = 327,011,019,471.75
  5. Step 5: Solve for x
    x = 327,011,019,471.75/571,835.89
  6. Step 6: Final answer
    x = 571,861.66

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Double scale
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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.