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Finding the Third Proportional to 215,038.50 and 332,409

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Solution

The third proportional to 215,038.50 and 332,409 is: 513,841.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,038.50 : 332,409 = 332,409 : x
  2. Step 2: Convert to fraction form
    215,038.50/332,409 = 332,409/x
  3. Step 3: Cross multiply
    215,038.50x = 332,409 × 332,409
  4. Step 4: Simplify right side
    215,038.50x = 110,495,743,281
  5. Step 5: Solve for x
    x = 110,495,743,281/215,038.50
  6. Step 6: Final answer
    x = 513,841.68

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.