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Finding the Fourth Proportional to 629,856,543.10, 879,758,426.90 and 629,856,543.10

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Solution

The fourth proportional to 629,856,543.10, 879,758,426.90 and 629,856,543.10 is: 879,758,426.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,856,543.10 : 879,758,426.90 = 629,856,543.10 : x
  2. Step 2: Convert to fraction form
    629,856,543.10/879,758,426.90 = 629,856,543.10/x
  3. Step 3: Cross multiply
    629,856,543.10x = 879,758,426.90 × 629,856,543.10
  4. Step 4: Simplify right side
    629,856,543.10x = 554,121,601,530,328,064
  5. Step 5: Solve for x
    x = 554,121,601,530,328,064/629,856,543.10
  6. Step 6: Final answer
    x = 879,758,426.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.