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Finding the Fourth Proportional to 210,979.38, 316,469.06 and 63,235.38

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Solution

The fourth proportional to 210,979.38, 316,469.06 and 63,235.38 is: 94,853.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,979.38 : 316,469.06 = 63,235.38 : x
  2. Step 2: Convert to fraction form
    210,979.38/316,469.06 = 63,235.38/x
  3. Step 3: Cross multiply
    210,979.38x = 316,469.06 × 63,235.38
  4. Step 4: Simplify right side
    210,979.38x = 20,012,041,267.34
  5. Step 5: Solve for x
    x = 20,012,041,267.34/210,979.38
  6. Step 6: Final answer
    x = 94,853.07

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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.