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Finding the Fourth Proportional to 425,311.92, 637,946.68 and 159,052.86

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Solution

The fourth proportional to 425,311.92, 637,946.68 and 159,052.86 is: 238,571.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,311.92 : 637,946.68 = 159,052.86 : x
  2. Step 2: Convert to fraction form
    425,311.92/637,946.68 = 159,052.86/x
  3. Step 3: Cross multiply
    425,311.92x = 637,946.68 × 159,052.86
  4. Step 4: Simplify right side
    425,311.92x = 101,467,243,981.51
  5. Step 5: Solve for x
    x = 101,467,243,981.51/425,311.92
  6. Step 6: Final answer
    x = 238,571.36

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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.