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Finding the Fourth Proportional to 260,227.89, 390,341.84 and 82,734.89

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Solution

The fourth proportional to 260,227.89, 390,341.84 and 82,734.89 is: 124,102.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,227.89 : 390,341.84 = 82,734.89 : x
  2. Step 2: Convert to fraction form
    260,227.89/390,341.84 = 82,734.89/x
  3. Step 3: Cross multiply
    260,227.89x = 390,341.84 × 82,734.89
  4. Step 4: Simplify right side
    260,227.89x = 32,294,886,829.41
  5. Step 5: Solve for x
    x = 32,294,886,829.41/260,227.89
  6. Step 6: Final answer
    x = 124,102.33

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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.