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Finding the Fourth Proportional to 651,385.65, 981,515.78 and 535,649.61

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Solution

The fourth proportional to 651,385.65, 981,515.78 and 535,649.61 is: 807,123.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,385.65 : 981,515.78 = 535,649.61 : x
  2. Step 2: Convert to fraction form
    651,385.65/981,515.78 = 535,649.61/x
  3. Step 3: Cross multiply
    651,385.65x = 981,515.78 × 535,649.61
  4. Step 4: Simplify right side
    651,385.65x = 525,748,544,765.85
  5. Step 5: Solve for x
    x = 525,748,544,765.85/651,385.65
  6. Step 6: Final answer
    x = 807,123.31

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.