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Finding the Fourth Proportional to 515,608.27, 711,528.71 and 286,152.23

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Solution

The fourth proportional to 515,608.27, 711,528.71 and 286,152.23 is: 394,884.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,608.27 : 711,528.71 = 286,152.23 : x
  2. Step 2: Convert to fraction form
    515,608.27/711,528.71 = 286,152.23/x
  3. Step 3: Cross multiply
    515,608.27x = 711,528.71 × 286,152.23
  4. Step 4: Simplify right side
    515,608.27x = 203,605,525,644.76
  5. Step 5: Solve for x
    x = 203,605,525,644.76/515,608.27
  6. Step 6: Final answer
    x = 394,884.13

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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.