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Finding the Fourth Proportional to 210,709.20, 316,016.34 and 60,916.14

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Solution

The fourth proportional to 210,709.20, 316,016.34 and 60,916.14 is: 91,360.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,709.20 : 316,016.34 = 60,916.14 : x
  2. Step 2: Convert to fraction form
    210,709.20/316,016.34 = 60,916.14/x
  3. Step 3: Cross multiply
    210,709.20x = 316,016.34 × 60,916.14
  4. Step 4: Simplify right side
    210,709.20x = 19,250,495,609.73
  5. Step 5: Solve for x
    x = 19,250,495,609.73/210,709.20
  6. Step 6: Final answer
    x = 91,360.49

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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.