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Finding the Fourth Proportional to 714,157.77, 985,535.01 and 391,873.25

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Solution

The fourth proportional to 714,157.77, 985,535.01 and 391,873.25 is: 540,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,157.77 : 985,535.01 = 391,873.25 : x
  2. Step 2: Convert to fraction form
    714,157.77/985,535.01 = 391,873.25/x
  3. Step 3: Cross multiply
    714,157.77x = 985,535.01 × 391,873.25
  4. Step 4: Simplify right side
    714,157.77x = 386,204,806,761.61
  5. Step 5: Solve for x
    x = 386,204,806,761.61/714,157.77
  6. Step 6: Final answer
    x = 540,783.60

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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.