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Finding the Fourth Proportional to 76,612.93, 105,777.93 and 47,944.18

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Solution

The fourth proportional to 76,612.93, 105,777.93 and 47,944.18 is: 66,195.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,612.93 : 105,777.93 = 47,944.18 : x
  2. Step 2: Convert to fraction form
    76,612.93/105,777.93 = 47,944.18/x
  3. Step 3: Cross multiply
    76,612.93x = 105,777.93 × 47,944.18
  4. Step 4: Simplify right side
    76,612.93x = 5,071,436,536.40
  5. Step 5: Solve for x
    x = 5,071,436,536.40/76,612.93
  6. Step 6: Final answer
    x = 66,195.57

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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.