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Finding the Fourth Proportional to 621,308.16, 930,562.08 and 435,150.72

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Solution

The fourth proportional to 621,308.16, 930,562.08 and 435,150.72 is: 651,745.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,308.16 : 930,562.08 = 435,150.72 : x
  2. Step 2: Convert to fraction form
    621,308.16/930,562.08 = 435,150.72/x
  3. Step 3: Cross multiply
    621,308.16x = 930,562.08 × 435,150.72
  4. Step 4: Simplify right side
    621,308.16x = 404,934,759,116.70
  5. Step 5: Solve for x
    x = 404,934,759,116.70/621,308.16
  6. Step 6: Final answer
    x = 651,745.44

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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.