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Finding the Fourth Proportional to 520,416.80, 718,156.80 and 294,057.44

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Solution

The fourth proportional to 520,416.80, 718,156.80 and 294,057.44 is: 405,788.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,416.80 : 718,156.80 = 294,057.44 : x
  2. Step 2: Convert to fraction form
    520,416.80/718,156.80 = 294,057.44/x
  3. Step 3: Cross multiply
    520,416.80x = 718,156.80 × 294,057.44
  4. Step 4: Simplify right side
    520,416.80x = 211,179,350,126.59
  5. Step 5: Solve for x
    x = 211,179,350,126.59/520,416.80
  6. Step 6: Final answer
    x = 405,788.88

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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.