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Finding the Fourth Proportional to 557,416.40, 836,124.60 and 520,091.60

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Solution

The fourth proportional to 557,416.40, 836,124.60 and 520,091.60 is: 780,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,416.40 : 836,124.60 = 520,091.60 : x
  2. Step 2: Convert to fraction form
    557,416.40/836,124.60 = 520,091.60/x
  3. Step 3: Cross multiply
    557,416.40x = 836,124.60 × 520,091.60
  4. Step 4: Simplify right side
    557,416.40x = 434,861,381,013.36
  5. Step 5: Solve for x
    x = 434,861,381,013.36/557,416.40
  6. Step 6: Final answer
    x = 780,137.40

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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.