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Finding the Fourth Proportional to 472,645.20, 708,967.80 and 413,596.20

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Solution

The fourth proportional to 472,645.20, 708,967.80 and 413,596.20 is: 620,394.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,645.20 : 708,967.80 = 413,596.20 : x
  2. Step 2: Convert to fraction form
    472,645.20/708,967.80 = 413,596.20/x
  3. Step 3: Cross multiply
    472,645.20x = 708,967.80 × 413,596.20
  4. Step 4: Simplify right side
    472,645.20x = 293,226,388,002.36
  5. Step 5: Solve for x
    x = 293,226,388,002.36/472,645.20
  6. Step 6: Final answer
    x = 620,394.30

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Similar ratio
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1.5x scale

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.