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Finding the Fourth Proportional to 92,850.90, 128,134.78 and 54,612.07

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Solution

The fourth proportional to 92,850.90, 128,134.78 and 54,612.07 is: 75,364.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,850.90 : 128,134.78 = 54,612.07 : x
  2. Step 2: Convert to fraction form
    92,850.90/128,134.78 = 54,612.07/x
  3. Step 3: Cross multiply
    92,850.90x = 128,134.78 × 54,612.07
  4. Step 4: Simplify right side
    92,850.90x = 6,997,705,117.93
  5. Step 5: Solve for x
    x = 6,997,705,117.93/92,850.90
  6. Step 6: Final answer
    x = 75,364.97

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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.