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Finding the Fourth Proportional to 291,715.86, 437,573.72 and 70,099.86

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Solution

The fourth proportional to 291,715.86, 437,573.72 and 70,099.86 is: 105,149.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,715.86 : 437,573.72 = 70,099.86 : x
  2. Step 2: Convert to fraction form
    291,715.86/437,573.72 = 70,099.86/x
  3. Step 3: Cross multiply
    291,715.86x = 437,573.72 × 70,099.86
  4. Step 4: Simplify right side
    291,715.86x = 30,673,856,511.68
  5. Step 5: Solve for x
    x = 30,673,856,511.68/291,715.86
  6. Step 6: Final answer
    x = 105,149.77

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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.