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Finding the Fourth Proportional to 92,847.54, 128,160.09 and 54,605.42

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Solution

The fourth proportional to 92,847.54, 128,160.09 and 54,605.42 is: 75,373.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,847.54 : 128,160.09 = 54,605.42 : x
  2. Step 2: Convert to fraction form
    92,847.54/128,160.09 = 54,605.42/x
  3. Step 3: Cross multiply
    92,847.54x = 128,160.09 × 54,605.42
  4. Step 4: Simplify right side
    92,847.54x = 6,998,234,900.89
  5. Step 5: Solve for x
    x = 6,998,234,900.89/92,847.54
  6. Step 6: Final answer
    x = 75,373.40

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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.