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Finding the Fourth Proportional to 394,718.40, 592,077.60 and 253,000.80

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Solution

The fourth proportional to 394,718.40, 592,077.60 and 253,000.80 is: 379,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,718.40 : 592,077.60 = 253,000.80 : x
  2. Step 2: Convert to fraction form
    394,718.40/592,077.60 = 253,000.80/x
  3. Step 3: Cross multiply
    394,718.40x = 592,077.60 × 253,000.80
  4. Step 4: Simplify right side
    394,718.40x = 149,796,106,462.08
  5. Step 5: Solve for x
    x = 149,796,106,462.08/394,718.40
  6. Step 6: Final answer
    x = 379,501.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.