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Finding the Fourth Proportional to 699,544.40, 965,342.76 and 413,157.20

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Solution

The fourth proportional to 699,544.40, 965,342.76 and 413,157.20 is: 570,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,544.40 : 965,342.76 = 413,157.20 : x
  2. Step 2: Convert to fraction form
    699,544.40/965,342.76 = 413,157.20/x
  3. Step 3: Cross multiply
    699,544.40x = 965,342.76 × 413,157.20
  4. Step 4: Simplify right side
    699,544.40x = 398,838,311,761.87
  5. Step 5: Solve for x
    x = 398,838,311,761.87/699,544.40
  6. Step 6: Final answer
    x = 570,140.10

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.