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Finding the Fourth Proportional to 338,925,110.40, 508,387,665.60 and 338,925,110.40

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Solution

The fourth proportional to 338,925,110.40, 508,387,665.60 and 338,925,110.40 is: 508,387,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,925,110.40 : 508,387,665.60 = 338,925,110.40 : x
  2. Step 2: Convert to fraction form
    338,925,110.40/508,387,665.60 = 338,925,110.40/x
  3. Step 3: Cross multiply
    338,925,110.40x = 508,387,665.60 × 338,925,110.40
  4. Step 4: Simplify right side
    338,925,110.40x = 172,305,345,689,478,272
  5. Step 5: Solve for x
    x = 172,305,345,689,478,272/338,925,110.40
  6. Step 6: Final answer
    x = 508,387,665.60

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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.