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Finding the Fourth Proportional to 304,999,669.17, 421,072,385.49 and 233,337,725.88

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Solution

The fourth proportional to 304,999,669.17, 421,072,385.49 and 233,337,725.88 is: 322,138,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,999,669.17 : 421,072,385.49 = 233,337,725.88 : x
  2. Step 2: Convert to fraction form
    304,999,669.17/421,072,385.49 = 233,337,725.88/x
  3. Step 3: Cross multiply
    304,999,669.17x = 421,072,385.49 × 233,337,725.88
  4. Step 4: Simplify right side
    304,999,669.17x = 98,252,072,861,103,312
  5. Step 5: Solve for x
    x = 98,252,072,861,103,312/304,999,669.17
  6. Step 6: Final answer
    x = 322,138,293.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.