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Finding the Fourth Proportional to 92,961, 128,285.78 and 52,682.42

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Solution

The fourth proportional to 92,961, 128,285.78 and 52,682.42 is: 72,701.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,961 : 128,285.78 = 52,682.42 : x
  2. Step 2: Convert to fraction form
    92,961/128,285.78 = 52,682.42/x
  3. Step 3: Cross multiply
    92,961x = 128,285.78 × 52,682.42
  4. Step 4: Simplify right side
    92,961x = 6,758,405,399.29
  5. Step 5: Solve for x
    x = 6,758,405,399.29/92,961
  6. Step 6: Final answer
    x = 72,701.51

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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.