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Finding the Fourth Proportional to 92,558.40, 138,837.60 and 45,902.40

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Solution

The fourth proportional to 92,558.40, 138,837.60 and 45,902.40 is: 68,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,558.40 : 138,837.60 = 45,902.40 : x
  2. Step 2: Convert to fraction form
    92,558.40/138,837.60 = 45,902.40/x
  3. Step 3: Cross multiply
    92,558.40x = 138,837.60 × 45,902.40
  4. Step 4: Simplify right side
    92,558.40x = 6,372,979,050.24
  5. Step 5: Solve for x
    x = 6,372,979,050.24/92,558.40
  6. Step 6: Final answer
    x = 68,853.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.