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Finding the Fourth Proportional to 92,043.20, 138,064.80 and 32,907.20

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Solution

The fourth proportional to 92,043.20, 138,064.80 and 32,907.20 is: 49,360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,043.20 : 138,064.80 = 32,907.20 : x
  2. Step 2: Convert to fraction form
    92,043.20/138,064.80 = 32,907.20/x
  3. Step 3: Cross multiply
    92,043.20x = 138,064.80 × 32,907.20
  4. Step 4: Simplify right side
    92,043.20x = 4,543,325,986.56
  5. Step 5: Solve for x
    x = 4,543,325,986.56/92,043.20
  6. Step 6: Final answer
    x = 49,360.80

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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.