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Finding the Fourth Proportional to 77,615.93, 107,059.43 and 63,446.33

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Solution

The fourth proportional to 77,615.93, 107,059.43 and 63,446.33 is: 87,514.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,615.93 : 107,059.43 = 63,446.33 : x
  2. Step 2: Convert to fraction form
    77,615.93/107,059.43 = 63,446.33/x
  3. Step 3: Cross multiply
    77,615.93x = 107,059.43 × 63,446.33
  4. Step 4: Simplify right side
    77,615.93x = 6,792,527,072.86
  5. Step 5: Solve for x
    x = 6,792,527,072.86/77,615.93
  6. Step 6: Final answer
    x = 87,514.61

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1.5x scale

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.