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Finding the Fourth Proportional to 876,630.15, 1,209,951 and 514,170.77

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Solution

The fourth proportional to 876,630.15, 1,209,951 and 514,170.77 is: 709,673.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,630.15 : 1,209,951 = 514,170.77 : x
  2. Step 2: Convert to fraction form
    876,630.15/1,209,951 = 514,170.77/x
  3. Step 3: Cross multiply
    876,630.15x = 1,209,951 × 514,170.77
  4. Step 4: Simplify right side
    876,630.15x = 622,121,431,282.52
  5. Step 5: Solve for x
    x = 622,121,431,282.52/876,630.15
  6. Step 6: Final answer
    x = 709,673.78

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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.