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Finding the Fourth Proportional to 465,415.92, 642,236.04 and 261,455.76

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Solution

The fourth proportional to 465,415.92, 642,236.04 and 261,455.76 is: 360,787.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,415.92 : 642,236.04 = 261,455.76 : x
  2. Step 2: Convert to fraction form
    465,415.92/642,236.04 = 261,455.76/x
  3. Step 3: Cross multiply
    465,415.92x = 642,236.04 × 261,455.76
  4. Step 4: Simplify right side
    465,415.92x = 167,916,311,937.59
  5. Step 5: Solve for x
    x = 167,916,311,937.59/465,415.92
  6. Step 6: Final answer
    x = 360,787.64

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1.5x scale

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.