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Finding the Fourth Proportional to 92,405.40, 138,672.90 and 59,206.20

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Solution

The fourth proportional to 92,405.40, 138,672.90 and 59,206.20 is: 88,850.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,405.40 : 138,672.90 = 59,206.20 : x
  2. Step 2: Convert to fraction form
    92,405.40/138,672.90 = 59,206.20/x
  3. Step 3: Cross multiply
    92,405.40x = 138,672.90 × 59,206.20
  4. Step 4: Simplify right side
    92,405.40x = 8,210,295,451.98
  5. Step 5: Solve for x
    x = 8,210,295,451.98/92,405.40
  6. Step 6: Final answer
    x = 88,850.82

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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.