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Finding the Fourth Proportional to 515,684.04, 711,649.44 and 286,245.60

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Solution

The fourth proportional to 515,684.04, 711,649.44 and 286,245.60 is: 395,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,684.04 : 711,649.44 = 286,245.60 : x
  2. Step 2: Convert to fraction form
    515,684.04/711,649.44 = 286,245.60/x
  3. Step 3: Cross multiply
    515,684.04x = 711,649.44 × 286,245.60
  4. Step 4: Simplify right side
    515,684.04x = 203,706,520,942.46
  5. Step 5: Solve for x
    x = 203,706,520,942.46/515,684.04
  6. Step 6: Final answer
    x = 395,021.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.