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Finding the Fourth Proportional to 476,961.40, 714,129.90 and 453,341.80

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Solution

The fourth proportional to 476,961.40, 714,129.90 and 453,341.80 is: 678,765.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,961.40 : 714,129.90 = 453,341.80 : x
  2. Step 2: Convert to fraction form
    476,961.40/714,129.90 = 453,341.80/x
  3. Step 3: Cross multiply
    476,961.40x = 714,129.90 × 453,341.80
  4. Step 4: Simplify right side
    476,961.40x = 323,744,934,299.82
  5. Step 5: Solve for x
    x = 323,744,934,299.82/476,961.40
  6. Step 6: Final answer
    x = 678,765.48

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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.