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Finding the Fourth Proportional to 651,410.40, 977,115.60 and 277,471.20

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Solution

The fourth proportional to 651,410.40, 977,115.60 and 277,471.20 is: 416,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,410.40 : 977,115.60 = 277,471.20 : x
  2. Step 2: Convert to fraction form
    651,410.40/977,115.60 = 277,471.20/x
  3. Step 3: Cross multiply
    651,410.40x = 977,115.60 × 277,471.20
  4. Step 4: Simplify right side
    651,410.40x = 271,121,438,070.72
  5. Step 5: Solve for x
    x = 271,121,438,070.72/651,410.40
  6. Step 6: Final answer
    x = 416,206.80

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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.