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Finding the Fourth Proportional to 520,355.89, 718,105.13 and 293,996.53

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Solution

The fourth proportional to 520,355.89, 718,105.13 and 293,996.53 is: 405,723.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,355.89 : 718,105.13 = 293,996.53 : x
  2. Step 2: Convert to fraction form
    520,355.89/718,105.13 = 293,996.53/x
  3. Step 3: Cross multiply
    520,355.89x = 718,105.13 × 293,996.53
  4. Step 4: Simplify right side
    520,355.89x = 211,120,414,925.22
  5. Step 5: Solve for x
    x = 211,120,414,925.22/520,355.89
  6. Step 6: Final answer
    x = 405,723.12

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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.