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Finding the Fourth Proportional to 191,783.84, 264,692.88 and 115,380.15

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Solution

The fourth proportional to 191,783.84, 264,692.88 and 115,380.15 is: 159,243.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,783.84 : 264,692.88 = 115,380.15 : x
  2. Step 2: Convert to fraction form
    191,783.84/264,692.88 = 115,380.15/x
  3. Step 3: Cross multiply
    191,783.84x = 264,692.88 × 115,380.15
  4. Step 4: Simplify right side
    191,783.84x = 30,540,303,205.73
  5. Step 5: Solve for x
    x = 30,540,303,205.73/191,783.84
  6. Step 6: Final answer
    x = 159,243.36

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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.