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Finding the Fourth Proportional to 52,615.67, 72,609.87 and 28,742.73

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Solution

The fourth proportional to 52,615.67, 72,609.87 and 28,742.73 is: 39,665.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,615.67 : 72,609.87 = 28,742.73 : x
  2. Step 2: Convert to fraction form
    52,615.67/72,609.87 = 28,742.73/x
  3. Step 3: Cross multiply
    52,615.67x = 72,609.87 × 28,742.73
  4. Step 4: Simplify right side
    52,615.67x = 2,087,005,888.75
  5. Step 5: Solve for x
    x = 2,087,005,888.75/52,615.67
  6. Step 6: Final answer
    x = 39,665.11

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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.