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Finding the Third Proportional to 1,620,915.75 and 3,527,239.50

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Solution

The third proportional to 1,620,915.75 and 3,527,239.50 is: 7,675,549.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,915.75 : 3,527,239.50 = 3,527,239.50 : x
  2. Step 2: Convert to fraction form
    1,620,915.75/3,527,239.50 = 3,527,239.50/x
  3. Step 3: Cross multiply
    1,620,915.75x = 3,527,239.50 × 3,527,239.50
  4. Step 4: Simplify right side
    1,620,915.75x = 12,441,418,490,360.25
  5. Step 5: Solve for x
    x = 12,441,418,490,360.25/1,620,915.75
  6. Step 6: Final answer
    x = 7,675,549.14

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.