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Finding the Fourth Proportional to 257,550.30, 386,325.45 and 253,176.30

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Solution

The fourth proportional to 257,550.30, 386,325.45 and 253,176.30 is: 379,764.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,550.30 : 386,325.45 = 253,176.30 : x
  2. Step 2: Convert to fraction form
    257,550.30/386,325.45 = 253,176.30/x
  3. Step 3: Cross multiply
    257,550.30x = 386,325.45 × 253,176.30
  4. Step 4: Simplify right side
    257,550.30x = 97,808,448,026.84
  5. Step 5: Solve for x
    x = 97,808,448,026.84/257,550.30
  6. Step 6: Final answer
    x = 379,764.45

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Similar ratio
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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.