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Finding the Fourth Proportional to 76,644.79, 105,771.86 and 46,423.69

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Solution

The fourth proportional to 76,644.79, 105,771.86 and 46,423.69 is: 64,065.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,644.79 : 105,771.86 = 46,423.69 : x
  2. Step 2: Convert to fraction form
    76,644.79/105,771.86 = 46,423.69/x
  3. Step 3: Cross multiply
    76,644.79x = 105,771.86 × 46,423.69
  4. Step 4: Simplify right side
    76,644.79x = 4,910,319,716.90
  5. Step 5: Solve for x
    x = 4,910,319,716.90/76,644.79
  6. Step 6: Final answer
    x = 64,065.93

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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.