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Finding the Fourth Proportional to 168,480,309.80, 236,552,678.20 and 168,480,309.80

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Solution

The fourth proportional to 168,480,309.80, 236,552,678.20 and 168,480,309.80 is: 236,552,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,480,309.80 : 236,552,678.20 = 168,480,309.80 : x
  2. Step 2: Convert to fraction form
    168,480,309.80/236,552,678.20 = 168,480,309.80/x
  3. Step 3: Cross multiply
    168,480,309.80x = 236,552,678.20 × 168,480,309.80
  4. Step 4: Simplify right side
    168,480,309.80x = 39,854,468,507,155,704
  5. Step 5: Solve for x
    x = 39,854,468,507,155,704/168,480,309.80
  6. Step 6: Final answer
    x = 236,552,678.20

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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.