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Finding the Fourth Proportional to 92,995.20, 139,492.80 and 89,366.40

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Solution

The fourth proportional to 92,995.20, 139,492.80 and 89,366.40 is: 134,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,995.20 : 139,492.80 = 89,366.40 : x
  2. Step 2: Convert to fraction form
    92,995.20/139,492.80 = 89,366.40/x
  3. Step 3: Cross multiply
    92,995.20x = 139,492.80 × 89,366.40
  4. Step 4: Simplify right side
    92,995.20x = 12,465,969,361.92
  5. Step 5: Solve for x
    x = 12,465,969,361.92/92,995.20
  6. Step 6: Final answer
    x = 134,049.60

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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.