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Finding the Fourth Proportional to 657,852.78, 907,553.79 and 386,003.82

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Solution

The fourth proportional to 657,852.78, 907,553.79 and 386,003.82 is: 532,519.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,852.78 : 907,553.79 = 386,003.82 : x
  2. Step 2: Convert to fraction form
    657,852.78/907,553.79 = 386,003.82/x
  3. Step 3: Cross multiply
    657,852.78x = 907,553.79 × 386,003.82
  4. Step 4: Simplify right side
    657,852.78x = 350,319,229,795.48
  5. Step 5: Solve for x
    x = 350,319,229,795.48/657,852.78
  6. Step 6: Final answer
    x = 532,519.19

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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.