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Finding the Fourth Proportional to 472,912.60, 708,969.48 and 220,062.64

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Solution

The fourth proportional to 472,912.60, 708,969.48 and 220,062.64 is: 329,908.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,912.60 : 708,969.48 = 220,062.64 : x
  2. Step 2: Convert to fraction form
    472,912.60/708,969.48 = 220,062.64/x
  3. Step 3: Cross multiply
    472,912.60x = 708,969.48 × 220,062.64
  4. Step 4: Simplify right side
    472,912.60x = 156,017,695,448.23
  5. Step 5: Solve for x
    x = 156,017,695,448.23/472,912.60
  6. Step 6: Final answer
    x = 329,908.10

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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.