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Finding the Fourth Proportional to 651,291.84, 981,374.13 and 535,555.80

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Solution

The fourth proportional to 651,291.84, 981,374.13 and 535,555.80 is: 806,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,291.84 : 981,374.13 = 535,555.80 : x
  2. Step 2: Convert to fraction form
    651,291.84/981,374.13 = 535,555.80/x
  3. Step 3: Cross multiply
    651,291.84x = 981,374.13 × 535,555.80
  4. Step 4: Simplify right side
    651,291.84x = 525,580,607,291.45
  5. Step 5: Solve for x
    x = 525,580,607,291.45/651,291.84
  6. Step 6: Final answer
    x = 806,981.72

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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.