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Finding the Fourth Proportional to 579,613.70, 869,420.55 and 367,037.30

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Solution

The fourth proportional to 579,613.70, 869,420.55 and 367,037.30 is: 550,555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,613.70 : 869,420.55 = 367,037.30 : x
  2. Step 2: Convert to fraction form
    579,613.70/869,420.55 = 367,037.30/x
  3. Step 3: Cross multiply
    579,613.70x = 869,420.55 × 367,037.30
  4. Step 4: Simplify right side
    579,613.70x = 319,109,771,236.52
  5. Step 5: Solve for x
    x = 319,109,771,236.52/579,613.70
  6. Step 6: Final answer
    x = 550,555.95

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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.