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Finding the Fourth Proportional to 623,590.20, 935,558.10 and 413,638.20

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Solution

The fourth proportional to 623,590.20, 935,558.10 and 413,638.20 is: 620,571.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,590.20 : 935,558.10 = 413,638.20 : x
  2. Step 2: Convert to fraction form
    623,590.20/935,558.10 = 413,638.20/x
  3. Step 3: Cross multiply
    623,590.20x = 935,558.10 × 413,638.20
  4. Step 4: Simplify right side
    623,590.20x = 386,982,568,479.42
  5. Step 5: Solve for x
    x = 386,982,568,479.42/623,590.20
  6. Step 6: Final answer
    x = 620,571.92

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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.