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Finding the Fourth Proportional to 607,281, 838,047.84 and 339,009

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Solution

The fourth proportional to 607,281, 838,047.84 and 339,009 is: 467,832.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,281 : 838,047.84 = 339,009 : x
  2. Step 2: Convert to fraction form
    607,281/838,047.84 = 339,009/x
  3. Step 3: Cross multiply
    607,281x = 838,047.84 × 339,009
  4. Step 4: Simplify right side
    607,281x = 284,105,760,190.56
  5. Step 5: Solve for x
    x = 284,105,760,190.56/607,281
  6. Step 6: Final answer
    x = 467,832.45

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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.