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Finding the Fourth Proportional to 219,814.65, 329,715.80 and 70,063.91

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Solution

The fourth proportional to 219,814.65, 329,715.80 and 70,063.91 is: 105,093.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,814.65 : 329,715.80 = 70,063.91 : x
  2. Step 2: Convert to fraction form
    219,814.65/329,715.80 = 70,063.91/x
  3. Step 3: Cross multiply
    219,814.65x = 329,715.80 × 70,063.91
  4. Step 4: Simplify right side
    219,814.65x = 23,101,178,610.75
  5. Step 5: Solve for x
    x = 23,101,178,610.75/219,814.65
  6. Step 6: Final answer
    x = 105,093.90

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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.