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Finding the Fourth Proportional to 209,952,721.80, 314,929,082.70 and 209,952,721.80

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Solution

The fourth proportional to 209,952,721.80, 314,929,082.70 and 209,952,721.80 is: 314,929,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,721.80 : 314,929,082.70 = 209,952,721.80 : x
  2. Step 2: Convert to fraction form
    209,952,721.80/314,929,082.70 = 209,952,721.80/x
  3. Step 3: Cross multiply
    209,952,721.80x = 314,929,082.70 × 209,952,721.80
  4. Step 4: Simplify right side
    209,952,721.80x = 66,120,218,086,842,296
  5. Step 5: Solve for x
    x = 66,120,218,086,842,296/209,952,721.80
  6. Step 6: Final answer
    x = 314,929,082.70

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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.