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Finding the Third Proportional to 7,229,931,989 and 11,172,088,520

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Solution

The third proportional to 7,229,931,989 and 11,172,088,520 is: 17,263,725,590.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,229,931,989 : 11,172,088,520 = 11,172,088,520 : x
  2. Step 2: Convert to fraction form
    7,229,931,989/11,172,088,520 = 11,172,088,520/x
  3. Step 3: Cross multiply
    7,229,931,989x = 11,172,088,520 × 11,172,088,520
  4. Step 4: Simplify right side
    7,229,931,989x = 124,815,561,898,715,791,360
  5. Step 5: Solve for x
    x = 124,815,561,898,715,791,360/7,229,931,989
  6. Step 6: Final answer
    x = 17,263,725,590.87

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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.