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Finding the Fourth Proportional to 37,486.92, 51,731.90 and 20,719.92

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Solution

The fourth proportional to 37,486.92, 51,731.90 and 20,719.92 is: 28,593.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,486.92 : 51,731.90 = 20,719.92 : x
  2. Step 2: Convert to fraction form
    37,486.92/51,731.90 = 20,719.92/x
  3. Step 3: Cross multiply
    37,486.92x = 51,731.90 × 20,719.92
  4. Step 4: Simplify right side
    37,486.92x = 1,071,880,829.45
  5. Step 5: Solve for x
    x = 1,071,880,829.45/37,486.92
  6. Step 6: Final answer
    x = 28,593.46

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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.