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Finding the Fourth Proportional to 619,404.90, 929,107.35 and 220,496.10

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Solution

The fourth proportional to 619,404.90, 929,107.35 and 220,496.10 is: 330,744.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,404.90 : 929,107.35 = 220,496.10 : x
  2. Step 2: Convert to fraction form
    619,404.90/929,107.35 = 220,496.10/x
  3. Step 3: Cross multiply
    619,404.90x = 929,107.35 × 220,496.10
  4. Step 4: Simplify right side
    619,404.90x = 204,864,547,156.34
  5. Step 5: Solve for x
    x = 204,864,547,156.34/619,404.90
  6. Step 6: Final answer
    x = 330,744.15

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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.