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Finding the Fourth Proportional to 261,008.33, 391,487.18 and 83,467.67

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Solution

The fourth proportional to 261,008.33, 391,487.18 and 83,467.67 is: 125,193.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,008.33 : 391,487.18 = 83,467.67 : x
  2. Step 2: Convert to fraction form
    261,008.33/391,487.18 = 83,467.67/x
  3. Step 3: Cross multiply
    261,008.33x = 391,487.18 × 83,467.67
  4. Step 4: Simplify right side
    261,008.33x = 32,676,520,374.70
  5. Step 5: Solve for x
    x = 32,676,520,374.70/261,008.33
  6. Step 6: Final answer
    x = 125,193.40

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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.