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Finding the Third Proportional to 326,742 and 499,724

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Solution

The third proportional to 326,742 and 499,724 is: 764,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,742 : 499,724 = 499,724 : x
  2. Step 2: Convert to fraction form
    326,742/499,724 = 499,724/x
  3. Step 3: Cross multiply
    326,742x = 499,724 × 499,724
  4. Step 4: Simplify right side
    326,742x = 249,724,076,176
  5. Step 5: Solve for x
    x = 249,724,076,176/326,742
  6. Step 6: Final answer
    x = 764,285.20

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.