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Finding the Fourth Proportional to 213,094.63, 319,693.99 and 70,939.63

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Solution

The fourth proportional to 213,094.63, 319,693.99 and 70,939.63 is: 106,426.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,094.63 : 319,693.99 = 70,939.63 : x
  2. Step 2: Convert to fraction form
    213,094.63/319,693.99 = 70,939.63/x
  3. Step 3: Cross multiply
    213,094.63x = 319,693.99 × 70,939.63
  4. Step 4: Simplify right side
    213,094.63x = 22,678,973,363.82
  5. Step 5: Solve for x
    x = 22,678,973,363.82/213,094.63
  6. Step 6: Final answer
    x = 106,426.77

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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.