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Finding the Fourth Proportional to 67,409.69, 92,990.16 and 54,677.70

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Solution

The fourth proportional to 67,409.69, 92,990.16 and 54,677.70 is: 75,426.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,409.69 : 92,990.16 = 54,677.70 : x
  2. Step 2: Convert to fraction form
    67,409.69/92,990.16 = 54,677.70/x
  3. Step 3: Cross multiply
    67,409.69x = 92,990.16 × 54,677.70
  4. Step 4: Simplify right side
    67,409.69x = 5,084,488,071.43
  5. Step 5: Solve for x
    x = 5,084,488,071.43/67,409.69
  6. Step 6: Final answer
    x = 75,426.67

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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.