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Finding the Fourth Proportional to 619,505.87, 855,035.15 and 404,829.95

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Solution

The fourth proportional to 619,505.87, 855,035.15 and 404,829.95 is: 558,741.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,505.87 : 855,035.15 = 404,829.95 : x
  2. Step 2: Convert to fraction form
    619,505.87/855,035.15 = 404,829.95/x
  3. Step 3: Cross multiply
    619,505.87x = 855,035.15 × 404,829.95
  4. Step 4: Simplify right side
    619,505.87x = 346,143,830,723.42
  5. Step 5: Solve for x
    x = 346,143,830,723.42/619,505.87
  6. Step 6: Final answer
    x = 558,741.81

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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.