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Finding the Fourth Proportional to 657,624.30, 986,436.45 and 515,906.70

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Solution

The fourth proportional to 657,624.30, 986,436.45 and 515,906.70 is: 773,860.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,624.30 : 986,436.45 = 515,906.70 : x
  2. Step 2: Convert to fraction form
    657,624.30/986,436.45 = 515,906.70/x
  3. Step 3: Cross multiply
    657,624.30x = 986,436.45 × 515,906.70
  4. Step 4: Simplify right side
    657,624.30x = 508,909,173,679.22
  5. Step 5: Solve for x
    x = 508,909,173,679.22/657,624.30
  6. Step 6: Final answer
    x = 773,860.05

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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.