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Finding the Fourth Proportional to 914,709.40, 1,372,064.10 and 416,073.40

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Solution

The fourth proportional to 914,709.40, 1,372,064.10 and 416,073.40 is: 624,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,709.40 : 1,372,064.10 = 416,073.40 : x
  2. Step 2: Convert to fraction form
    914,709.40/1,372,064.10 = 416,073.40/x
  3. Step 3: Cross multiply
    914,709.40x = 1,372,064.10 × 416,073.40
  4. Step 4: Simplify right side
    914,709.40x = 570,879,375,104.94
  5. Step 5: Solve for x
    x = 570,879,375,104.94/914,709.40
  6. Step 6: Final answer
    x = 624,110.10

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