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Finding the Fourth Proportional to 289,875.21, 434,609.06 and 127,692.30

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Solution

The fourth proportional to 289,875.21, 434,609.06 and 127,692.30 is: 191,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,875.21 : 434,609.06 = 127,692.30 : x
  2. Step 2: Convert to fraction form
    289,875.21/434,609.06 = 127,692.30/x
  3. Step 3: Cross multiply
    289,875.21x = 434,609.06 × 127,692.30
  4. Step 4: Simplify right side
    289,875.21x = 55,496,229,833.78
  5. Step 5: Solve for x
    x = 55,496,229,833.78/289,875.21
  6. Step 6: Final answer
    x = 191,448.69

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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.