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Finding the Fourth Proportional to 695,228.93, 958,920.28 and 638,052.56

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Solution

The fourth proportional to 695,228.93, 958,920.28 and 638,052.56 is: 880,057.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,228.93 : 958,920.28 = 638,052.56 : x
  2. Step 2: Convert to fraction form
    695,228.93/958,920.28 = 638,052.56/x
  3. Step 3: Cross multiply
    695,228.93x = 958,920.28 × 638,052.56
  4. Step 4: Simplify right side
    695,228.93x = 611,841,539,489.92
  5. Step 5: Solve for x
    x = 611,841,539,489.92/695,228.93
  6. Step 6: Final answer
    x = 880,057.65

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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.