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Finding the Third Proportional to 215,821,987.50 and 334,046,326.50

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Solution

The third proportional to 215,821,987.50 and 334,046,326.50 is: 517,032,344.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,821,987.50 : 334,046,326.50 = 334,046,326.50 : x
  2. Step 2: Convert to fraction form
    215,821,987.50/334,046,326.50 = 334,046,326.50/x
  3. Step 3: Cross multiply
    215,821,987.50x = 334,046,326.50 × 334,046,326.50
  4. Step 4: Simplify right side
    215,821,987.50x = 111,586,948,248,144,608
  5. Step 5: Solve for x
    x = 111,586,948,248,144,608/215,821,987.50
  6. Step 6: Final answer
    x = 517,032,344.76

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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.