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Finding the Fourth Proportional to 76,600.87, 105,712.21 and 46,369.09

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Solution

The fourth proportional to 76,600.87, 105,712.21 and 46,369.09 is: 63,991.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,600.87 : 105,712.21 = 46,369.09 : x
  2. Step 2: Convert to fraction form
    76,600.87/105,712.21 = 46,369.09/x
  3. Step 3: Cross multiply
    76,600.87x = 105,712.21 × 46,369.09
  4. Step 4: Simplify right side
    76,600.87x = 4,901,778,979.59
  5. Step 5: Solve for x
    x = 4,901,778,979.59/76,600.87
  6. Step 6: Final answer
    x = 63,991.17

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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.