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Finding the Fourth Proportional to 92,920.65, 128,230.65 and 50,479.22

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Solution

The fourth proportional to 92,920.65, 128,230.65 and 50,479.22 is: 69,661.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,920.65 : 128,230.65 = 50,479.22 : x
  2. Step 2: Convert to fraction form
    92,920.65/128,230.65 = 50,479.22/x
  3. Step 3: Cross multiply
    92,920.65x = 128,230.65 × 50,479.22
  4. Step 4: Simplify right side
    92,920.65x = 6,472,983,192.09
  5. Step 5: Solve for x
    x = 6,472,983,192.09/92,920.65
  6. Step 6: Final answer
    x = 69,661.41

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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.