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Finding the Fourth Proportional to 664,704,335.80, 997,056,503.70 and 551,458,127.80

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Solution

The fourth proportional to 664,704,335.80, 997,056,503.70 and 551,458,127.80 is: 827,187,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,704,335.80 : 997,056,503.70 = 551,458,127.80 : x
  2. Step 2: Convert to fraction form
    664,704,335.80/997,056,503.70 = 551,458,127.80/x
  3. Step 3: Cross multiply
    664,704,335.80x = 997,056,503.70 × 551,458,127.80
  4. Step 4: Simplify right side
    664,704,335.80x = 549,834,912,841,215,744
  5. Step 5: Solve for x
    x = 549,834,912,841,215,744/664,704,335.80
  6. Step 6: Final answer
    x = 827,187,191.70

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Double scale
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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.