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Finding the Fourth Proportional to 605,543.60, 908,315.40 and 512,231.60

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Solution

The fourth proportional to 605,543.60, 908,315.40 and 512,231.60 is: 768,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,543.60 : 908,315.40 = 512,231.60 : x
  2. Step 2: Convert to fraction form
    605,543.60/908,315.40 = 512,231.60/x
  3. Step 3: Cross multiply
    605,543.60x = 908,315.40 × 512,231.60
  4. Step 4: Simplify right side
    605,543.60x = 465,267,850,646.64
  5. Step 5: Solve for x
    x = 465,267,850,646.64/605,543.60
  6. Step 6: Final answer
    x = 768,347.40

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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.