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Finding the Fourth Proportional to 893,572.79, 1,233,142.92 and 485,674.50

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Solution

The fourth proportional to 893,572.79, 1,233,142.92 and 485,674.50 is: 670,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,572.79 : 1,233,142.92 = 485,674.50 : x
  2. Step 2: Convert to fraction form
    893,572.79/1,233,142.92 = 485,674.50/x
  3. Step 3: Cross multiply
    893,572.79x = 1,233,142.92 × 485,674.50
  4. Step 4: Simplify right side
    893,572.79x = 598,906,074,182.40
  5. Step 5: Solve for x
    x = 598,906,074,182.40/893,572.79
  6. Step 6: Final answer
    x = 670,237.59

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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.