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Finding the Fourth Proportional to 824,689.60, 1,236,861.60 and 404,267.20

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Solution

The fourth proportional to 824,689.60, 1,236,861.60 and 404,267.20 is: 606,316.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,689.60 : 1,236,861.60 = 404,267.20 : x
  2. Step 2: Convert to fraction form
    824,689.60/1,236,861.60 = 404,267.20/x
  3. Step 3: Cross multiply
    824,689.60x = 1,236,861.60 × 404,267.20
  4. Step 4: Simplify right side
    824,689.60x = 500,022,575,819.52
  5. Step 5: Solve for x
    x = 500,022,575,819.52/824,689.60
  6. Step 6: Final answer
    x = 606,316.09

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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.