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Finding the Fourth Proportional to 515,523.39, 711,426.72 and 286,096.16

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Solution

The fourth proportional to 515,523.39, 711,426.72 and 286,096.16 is: 394,815.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,523.39 : 711,426.72 = 286,096.16 : x
  2. Step 2: Convert to fraction form
    515,523.39/711,426.72 = 286,096.16/x
  3. Step 3: Cross multiply
    515,523.39x = 711,426.72 × 286,096.16
  4. Step 4: Simplify right side
    515,523.39x = 203,536,449,156.26
  5. Step 5: Solve for x
    x = 203,536,449,156.26/515,523.39
  6. Step 6: Final answer
    x = 394,815.16

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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.