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Finding the Fourth Proportional to 77,659.32, 107,056.92 and 54,927.48

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Solution

The fourth proportional to 77,659.32, 107,056.92 and 54,927.48 is: 75,720.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,659.32 : 107,056.92 = 54,927.48 : x
  2. Step 2: Convert to fraction form
    77,659.32/107,056.92 = 54,927.48/x
  3. Step 3: Cross multiply
    77,659.32x = 107,056.92 × 54,927.48
  4. Step 4: Simplify right side
    77,659.32x = 5,880,366,832.16
  5. Step 5: Solve for x
    x = 5,880,366,832.16/77,659.32
  6. Step 6: Final answer
    x = 75,720.04

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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.