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Finding the Fourth Proportional to 92,920.64, 128,231.00 and 50,479.27

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Solution

The fourth proportional to 92,920.64, 128,231.00 and 50,479.27 is: 69,661.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,920.64 : 128,231.00 = 50,479.27 : x
  2. Step 2: Convert to fraction form
    92,920.64/128,231.00 = 50,479.27/x
  3. Step 3: Cross multiply
    92,920.64x = 128,231.00 × 50,479.27
  4. Step 4: Simplify right side
    92,920.64x = 6,473,006,887.69
  5. Step 5: Solve for x
    x = 6,473,006,887.69/92,920.64
  6. Step 6: Final answer
    x = 69,661.67

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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.