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Finding the Fourth Proportional to 77,960.91, 107,613.71 and 46,129.73

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Solution

The fourth proportional to 77,960.91, 107,613.71 and 46,129.73 is: 63,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,960.91 : 107,613.71 = 46,129.73 : x
  2. Step 2: Convert to fraction form
    77,960.91/107,613.71 = 46,129.73/x
  3. Step 3: Cross multiply
    77,960.91x = 107,613.71 × 46,129.73
  4. Step 4: Simplify right side
    77,960.91x = 4,964,191,770.96
  5. Step 5: Solve for x
    x = 4,964,191,770.96/77,960.91
  6. Step 6: Final answer
    x = 63,675.40

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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.