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Finding the Fourth Proportional to 515,528.53, 711,437.11 and 286,100.68

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Solution

The fourth proportional to 515,528.53, 711,437.11 and 286,100.68 is: 394,823.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,528.53 : 711,437.11 = 286,100.68 : x
  2. Step 2: Convert to fraction form
    515,528.53/711,437.11 = 286,100.68/x
  3. Step 3: Cross multiply
    515,528.53x = 711,437.11 × 286,100.68
  4. Step 4: Simplify right side
    515,528.53x = 203,542,637,120.45
  5. Step 5: Solve for x
    x = 203,542,637,120.45/515,528.53
  6. Step 6: Final answer
    x = 394,823.23

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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.