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Finding the Fourth Proportional to 93,891.69, 129,499.85 and 65,211.38

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Solution

The fourth proportional to 93,891.69, 129,499.85 and 65,211.38 is: 89,942.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,891.69 : 129,499.85 = 65,211.38 : x
  2. Step 2: Convert to fraction form
    93,891.69/129,499.85 = 65,211.38/x
  3. Step 3: Cross multiply
    93,891.69x = 129,499.85 × 65,211.38
  4. Step 4: Simplify right side
    93,891.69x = 8,444,863,602.24
  5. Step 5: Solve for x
    x = 8,444,863,602.24/93,891.69
  6. Step 6: Final answer
    x = 89,942.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.