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Finding the Fourth Proportional to 93,193.40, 140,471.89 and 85,206.40

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Solution

The fourth proportional to 93,193.40, 140,471.89 and 85,206.40 is: 128,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,193.40 : 140,471.89 = 85,206.40 : x
  2. Step 2: Convert to fraction form
    93,193.40/140,471.89 = 85,206.40/x
  3. Step 3: Cross multiply
    93,193.40x = 140,471.89 × 85,206.40
  4. Step 4: Simplify right side
    93,193.40x = 11,969,103,483.90
  5. Step 5: Solve for x
    x = 11,969,103,483.90/93,193.40
  6. Step 6: Final answer
    x = 128,432.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.