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Finding the Fourth Proportional to 936,272.10, 1,404,408.15 and 712,323.30

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Solution

The fourth proportional to 936,272.10, 1,404,408.15 and 712,323.30 is: 1,068,484.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,272.10 : 1,404,408.15 = 712,323.30 : x
  2. Step 2: Convert to fraction form
    936,272.10/1,404,408.15 = 712,323.30/x
  3. Step 3: Cross multiply
    936,272.10x = 1,404,408.15 × 712,323.30
  4. Step 4: Simplify right side
    936,272.10x = 1,000,392,647,954.90
  5. Step 5: Solve for x
    x = 1,000,392,647,954.90/936,272.10
  6. Step 6: Final answer
    x = 1,068,484.95

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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.