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Finding the Fourth Proportional to 92,803.90, 128,069.72 and 50,362.42

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Solution

The fourth proportional to 92,803.90, 128,069.72 and 50,362.42 is: 69,500.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,803.90 : 128,069.72 = 50,362.42 : x
  2. Step 2: Convert to fraction form
    92,803.90/128,069.72 = 50,362.42/x
  3. Step 3: Cross multiply
    92,803.90x = 128,069.72 × 50,362.42
  4. Step 4: Simplify right side
    92,803.90x = 6,449,901,027.92
  5. Step 5: Solve for x
    x = 6,449,901,027.92/92,803.90
  6. Step 6: Final answer
    x = 69,500.32

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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.