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Finding the Fourth Proportional to 662,590.80, 993,886.20 and 219,358.80

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Solution

The fourth proportional to 662,590.80, 993,886.20 and 219,358.80 is: 329,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,590.80 : 993,886.20 = 219,358.80 : x
  2. Step 2: Convert to fraction form
    662,590.80/993,886.20 = 219,358.80/x
  3. Step 3: Cross multiply
    662,590.80x = 993,886.20 × 219,358.80
  4. Step 4: Simplify right side
    662,590.80x = 218,017,684,168.56
  5. Step 5: Solve for x
    x = 218,017,684,168.56/662,590.80
  6. Step 6: Final answer
    x = 329,038.20

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Double scale
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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.