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Finding the Fourth Proportional to 418,910.82, 623,628.53 and 416,420.07

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Solution

The fourth proportional to 418,910.82, 623,628.53 and 416,420.07 is: 619,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,910.82 : 623,628.53 = 416,420.07 : x
  2. Step 2: Convert to fraction form
    418,910.82/623,628.53 = 416,420.07/x
  3. Step 3: Cross multiply
    418,910.82x = 623,628.53 × 416,420.07
  4. Step 4: Simplify right side
    418,910.82x = 259,691,434,034.50
  5. Step 5: Solve for x
    x = 259,691,434,034.50/418,910.82
  6. Step 6: Final answer
    x = 619,920.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.