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Finding the Fourth Proportional to 639,195.96, 957,557.53 and 535,380.72

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Solution

The fourth proportional to 639,195.96, 957,557.53 and 535,380.72 is: 802,035.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,195.96 : 957,557.53 = 535,380.72 : x
  2. Step 2: Convert to fraction form
    639,195.96/957,557.53 = 535,380.72/x
  3. Step 3: Cross multiply
    639,195.96x = 957,557.53 × 535,380.72
  4. Step 4: Simplify right side
    639,195.96x = 512,657,839,852.82
  5. Step 5: Solve for x
    x = 512,657,839,852.82/639,195.96
  6. Step 6: Final answer
    x = 802,035.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.