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Finding the Fourth Proportional to 619,266.40, 928,899.60 and 353,545.90

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Solution

The fourth proportional to 619,266.40, 928,899.60 and 353,545.90 is: 530,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,266.40 : 928,899.60 = 353,545.90 : x
  2. Step 2: Convert to fraction form
    619,266.40/928,899.60 = 353,545.90/x
  3. Step 3: Cross multiply
    619,266.40x = 928,899.60 × 353,545.90
  4. Step 4: Simplify right side
    619,266.40x = 328,408,645,091.64
  5. Step 5: Solve for x
    x = 328,408,645,091.64/619,266.40
  6. Step 6: Final answer
    x = 530,318.85

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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.