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Finding the Fourth Proportional to 707,955.54, 976,967.34 and 385,669.50

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Solution

The fourth proportional to 707,955.54, 976,967.34 and 385,669.50 is: 532,217.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,955.54 : 976,967.34 = 385,669.50 : x
  2. Step 2: Convert to fraction form
    707,955.54/976,967.34 = 385,669.50/x
  3. Step 3: Cross multiply
    707,955.54x = 976,967.34 × 385,669.50
  4. Step 4: Simplify right side
    707,955.54x = 376,786,505,534.13
  5. Step 5: Solve for x
    x = 376,786,505,534.13/707,955.54
  6. Step 6: Final answer
    x = 532,217.75

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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.