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Finding the Fourth Proportional to 524,009.70, 786,014.55 and 191,715.30

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Solution

The fourth proportional to 524,009.70, 786,014.55 and 191,715.30 is: 287,572.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,009.70 : 786,014.55 = 191,715.30 : x
  2. Step 2: Convert to fraction form
    524,009.70/786,014.55 = 191,715.30/x
  3. Step 3: Cross multiply
    524,009.70x = 786,014.55 × 191,715.30
  4. Step 4: Simplify right side
    524,009.70x = 150,691,015,257.62
  5. Step 5: Solve for x
    x = 150,691,015,257.62/524,009.70
  6. Step 6: Final answer
    x = 287,572.95

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Double scale
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Similar ratio
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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.