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Finding the Fourth Proportional to 76,297.92, 105,245.28 and 55,124.16

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Solution

The fourth proportional to 76,297.92, 105,245.28 and 55,124.16 is: 76,038.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,297.92 : 105,245.28 = 55,124.16 : x
  2. Step 2: Convert to fraction form
    76,297.92/105,245.28 = 55,124.16/x
  3. Step 3: Cross multiply
    76,297.92x = 105,245.28 × 55,124.16
  4. Step 4: Simplify right side
    76,297.92x = 5,801,557,653.96
  5. Step 5: Solve for x
    x = 5,801,557,653.96/76,297.92
  6. Step 6: Final answer
    x = 76,038.22

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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.