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Finding the Fourth Proportional to 515,613.51, 711,535.92 and 286,157.48

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Solution

The fourth proportional to 515,613.51, 711,535.92 and 286,157.48 is: 394,891.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,613.51 : 711,535.92 = 286,157.48 : x
  2. Step 2: Convert to fraction form
    515,613.51/711,535.92 = 286,157.48/x
  3. Step 3: Cross multiply
    515,613.51x = 711,535.92 × 286,157.48
  4. Step 4: Simplify right side
    515,613.51x = 203,611,322,239.00
  5. Step 5: Solve for x
    x = 203,611,322,239.00/515,613.51
  6. Step 6: Final answer
    x = 394,891.36

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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.