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Finding the Fourth Proportional to 93,711.50, 140,581.86 and 30,516.70

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Solution

The fourth proportional to 93,711.50, 140,581.86 and 30,516.70 is: 45,779.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,711.50 : 140,581.86 = 30,516.70 : x
  2. Step 2: Convert to fraction form
    93,711.50/140,581.86 = 30,516.70/x
  3. Step 3: Cross multiply
    93,711.50x = 140,581.86 × 30,516.70
  4. Step 4: Simplify right side
    93,711.50x = 4,290,094,447.06
  5. Step 5: Solve for x
    x = 4,290,094,447.06/93,711.50
  6. Step 6: Final answer
    x = 45,779.81

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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.