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Finding the Fourth Proportional to 91,992.86, 126,953.74 and 51,706.50

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Solution

The fourth proportional to 91,992.86, 126,953.74 and 51,706.50 is: 71,356.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,992.86 : 126,953.74 = 51,706.50 : x
  2. Step 2: Convert to fraction form
    91,992.86/126,953.74 = 51,706.50/x
  3. Step 3: Cross multiply
    91,992.86x = 126,953.74 × 51,706.50
  4. Step 4: Simplify right side
    91,992.86x = 6,564,333,145.87
  5. Step 5: Solve for x
    x = 6,564,333,145.87/91,992.86
  6. Step 6: Final answer
    x = 71,356.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.