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Finding the Fourth Proportional to 266,911,925.80, 400,367,888.70 and 164,343,375.40

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Solution

The fourth proportional to 266,911,925.80, 400,367,888.70 and 164,343,375.40 is: 246,515,063.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,911,925.80 : 400,367,888.70 = 164,343,375.40 : x
  2. Step 2: Convert to fraction form
    266,911,925.80/400,367,888.70 = 164,343,375.40/x
  3. Step 3: Cross multiply
    266,911,925.80x = 400,367,888.70 × 164,343,375.40
  4. Step 4: Simplify right side
    266,911,925.80x = 65,797,810,230,729,520
  5. Step 5: Solve for x
    x = 65,797,810,230,729,520/266,911,925.80
  6. Step 6: Final answer
    x = 246,515,063.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.