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Finding the Fourth Proportional to 92,912.94, 128,197.82 and 54,674.16

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Solution

The fourth proportional to 92,912.94, 128,197.82 and 54,674.16 is: 75,437.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,912.94 : 128,197.82 = 54,674.16 : x
  2. Step 2: Convert to fraction form
    92,912.94/128,197.82 = 54,674.16/x
  3. Step 3: Cross multiply
    92,912.94x = 128,197.82 × 54,674.16
  4. Step 4: Simplify right side
    92,912.94x = 7,009,107,848.96
  5. Step 5: Solve for x
    x = 7,009,107,848.96/92,912.94
  6. Step 6: Final answer
    x = 75,437.37

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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.