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Finding the Third Proportional to 1,308,964.50 and 1,920,354.75

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Solution

The third proportional to 1,308,964.50 and 1,920,354.75 is: 2,817,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,964.50 : 1,920,354.75 = 1,920,354.75 : x
  2. Step 2: Convert to fraction form
    1,308,964.50/1,920,354.75 = 1,920,354.75/x
  3. Step 3: Cross multiply
    1,308,964.50x = 1,920,354.75 × 1,920,354.75
  4. Step 4: Simplify right side
    1,308,964.50x = 3,687,762,365,847.56
  5. Step 5: Solve for x
    x = 3,687,762,365,847.56/1,308,964.50
  6. Step 6: Final answer
    x = 2,817,312.74

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.