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Finding the Fourth Proportional to 28,593.38, 42,870.92 and 11,042.71

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Solution

The fourth proportional to 28,593.38, 42,870.92 and 11,042.71 is: 16,556.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593.38 : 42,870.92 = 11,042.71 : x
  2. Step 2: Convert to fraction form
    28,593.38/42,870.92 = 11,042.71/x
  3. Step 3: Cross multiply
    28,593.38x = 42,870.92 × 11,042.71
  4. Step 4: Simplify right side
    28,593.38x = 473,411,136.99
  5. Step 5: Solve for x
    x = 473,411,136.99/28,593.38
  6. Step 6: Final answer
    x = 16,556.67

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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.