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Finding the Fourth Proportional to 520,682.77, 718,608.78 and 291,252.80

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Solution

The fourth proportional to 520,682.77, 718,608.78 and 291,252.80 is: 401,966.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,682.77 : 718,608.78 = 291,252.80 : x
  2. Step 2: Convert to fraction form
    520,682.77/718,608.78 = 291,252.80/x
  3. Step 3: Cross multiply
    520,682.77x = 718,608.78 × 291,252.80
  4. Step 4: Simplify right side
    520,682.77x = 209,296,819,279.58
  5. Step 5: Solve for x
    x = 209,296,819,279.58/520,682.77
  6. Step 6: Final answer
    x = 401,966.09

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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.