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Finding the Fourth Proportional to 191,183.70, 286,607.88 and 72,776.28

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Solution

The fourth proportional to 191,183.70, 286,607.88 and 72,776.28 is: 109,100.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,183.70 : 286,607.88 = 72,776.28 : x
  2. Step 2: Convert to fraction form
    191,183.70/286,607.88 = 72,776.28/x
  3. Step 3: Cross multiply
    191,183.70x = 286,607.88 × 72,776.28
  4. Step 4: Simplify right side
    191,183.70x = 20,858,254,961.21
  5. Step 5: Solve for x
    x = 20,858,254,961.21/191,183.70
  6. Step 6: Final answer
    x = 109,100.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.