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Finding the Fourth Proportional to 92,821.66, 128,094.02 and 50,380.20

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Solution

The fourth proportional to 92,821.66, 128,094.02 and 50,380.20 is: 69,524.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,821.66 : 128,094.02 = 50,380.20 : x
  2. Step 2: Convert to fraction form
    92,821.66/128,094.02 = 50,380.20/x
  3. Step 3: Cross multiply
    92,821.66x = 128,094.02 × 50,380.20
  4. Step 4: Simplify right side
    92,821.66x = 6,453,402,346.40
  5. Step 5: Solve for x
    x = 6,453,402,346.40/92,821.66
  6. Step 6: Final answer
    x = 69,524.75

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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.