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Finding the Fourth Proportional to 210,543.72, 315,835.41 and 58,750.86

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Solution

The fourth proportional to 210,543.72, 315,835.41 and 58,750.86 is: 88,131.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,543.72 : 315,835.41 = 58,750.86 : x
  2. Step 2: Convert to fraction form
    210,543.72/315,835.41 = 58,750.86/x
  3. Step 3: Cross multiply
    210,543.72x = 315,835.41 × 58,750.86
  4. Step 4: Simplify right side
    210,543.72x = 18,555,601,955.95
  5. Step 5: Solve for x
    x = 18,555,601,955.95/210,543.72
  6. Step 6: Final answer
    x = 88,131.82

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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.