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Finding the Fourth Proportional to 668,716.74, 923,187.06 and 515,418.96

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Solution

The fourth proportional to 668,716.74, 923,187.06 and 515,418.96 is: 711,554.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,716.74 : 923,187.06 = 515,418.96 : x
  2. Step 2: Convert to fraction form
    668,716.74/923,187.06 = 515,418.96/x
  3. Step 3: Cross multiply
    668,716.74x = 923,187.06 × 515,418.96
  4. Step 4: Simplify right side
    668,716.74x = 475,828,114,350.66
  5. Step 5: Solve for x
    x = 475,828,114,350.66/668,716.74
  6. Step 6: Final answer
    x = 711,554.06

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1.5x scale

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.