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Finding the Fourth Proportional to 210,610.86, 315,869.76 and 60,818.52

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Solution

The fourth proportional to 210,610.86, 315,869.76 and 60,818.52 is: 91,214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,610.86 : 315,869.76 = 60,818.52 : x
  2. Step 2: Convert to fraction form
    210,610.86/315,869.76 = 60,818.52/x
  3. Step 3: Cross multiply
    210,610.86x = 315,869.76 × 60,818.52
  4. Step 4: Simplify right side
    210,610.86x = 19,210,731,315.96
  5. Step 5: Solve for x
    x = 19,210,731,315.96/210,610.86
  6. Step 6: Final answer
    x = 91,214.34

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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.