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Finding the Fourth Proportional to 585,613.80, 878,420.70 and 515,629.80

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Solution

The fourth proportional to 585,613.80, 878,420.70 and 515,629.80 is: 773,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,613.80 : 878,420.70 = 515,629.80 : x
  2. Step 2: Convert to fraction form
    585,613.80/878,420.70 = 515,629.80/x
  3. Step 3: Cross multiply
    585,613.80x = 878,420.70 × 515,629.80
  4. Step 4: Simplify right side
    585,613.80x = 452,939,889,856.86
  5. Step 5: Solve for x
    x = 452,939,889,856.86/585,613.80
  6. Step 6: Final answer
    x = 773,444.70

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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.