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Finding the Fourth Proportional to 514,940.48, 710,659.74 and 285,520.53

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Solution

The fourth proportional to 514,940.48, 710,659.74 and 285,520.53 is: 394,041.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,940.48 : 710,659.74 = 285,520.53 : x
  2. Step 2: Convert to fraction form
    514,940.48/710,659.74 = 285,520.53/x
  3. Step 3: Cross multiply
    514,940.48x = 710,659.74 × 285,520.53
  4. Step 4: Simplify right side
    514,940.48x = 202,907,945,614.46
  5. Step 5: Solve for x
    x = 202,907,945,614.46/514,940.48
  6. Step 6: Final answer
    x = 394,041.55

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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.