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Finding the Fourth Proportional to 92,990.88, 128,329.92 and 50,552.28

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Solution

The fourth proportional to 92,990.88, 128,329.92 and 50,552.28 is: 69,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,990.88 : 128,329.92 = 50,552.28 : x
  2. Step 2: Convert to fraction form
    92,990.88/128,329.92 = 50,552.28/x
  3. Step 3: Cross multiply
    92,990.88x = 128,329.92 × 50,552.28
  4. Step 4: Simplify right side
    92,990.88x = 6,487,370,048.22
  5. Step 5: Solve for x
    x = 6,487,370,048.22/92,990.88
  6. Step 6: Final answer
    x = 69,763.51

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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.