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Finding the Fourth Proportional to 867,507.88, 1,197,165 and 485,608.48

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Solution

The fourth proportional to 867,507.88, 1,197,165 and 485,608.48 is: 670,142.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,507.88 : 1,197,165 = 485,608.48 : x
  2. Step 2: Convert to fraction form
    867,507.88/1,197,165 = 485,608.48/x
  3. Step 3: Cross multiply
    867,507.88x = 1,197,165 × 485,608.48
  4. Step 4: Simplify right side
    867,507.88x = 581,353,475,959.20
  5. Step 5: Solve for x
    x = 581,353,475,959.20/867,507.88
  6. Step 6: Final answer
    x = 670,142.01

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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.