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Finding the Fourth Proportional to 92,142.72, 127,155.60 and 53,928.54

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Solution

The fourth proportional to 92,142.72, 127,155.60 and 53,928.54 is: 74,420.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,142.72 : 127,155.60 = 53,928.54 : x
  2. Step 2: Convert to fraction form
    92,142.72/127,155.60 = 53,928.54/x
  3. Step 3: Cross multiply
    92,142.72x = 127,155.60 × 53,928.54
  4. Step 4: Simplify right side
    92,142.72x = 6,857,315,860.82
  5. Step 5: Solve for x
    x = 6,857,315,860.82/92,142.72
  6. Step 6: Final answer
    x = 74,420.59

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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.