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Finding the Fourth Proportional to 611,203.86, 843,419.10 and 339,250.38

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Solution

The fourth proportional to 611,203.86, 843,419.10 and 339,250.38 is: 468,142.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,203.86 : 843,419.10 = 339,250.38 : x
  2. Step 2: Convert to fraction form
    611,203.86/843,419.10 = 339,250.38/x
  3. Step 3: Cross multiply
    611,203.86x = 843,419.10 × 339,250.38
  4. Step 4: Simplify right side
    611,203.86x = 286,130,250,174.26
  5. Step 5: Solve for x
    x = 286,130,250,174.26/611,203.86
  6. Step 6: Final answer
    x = 468,142.09

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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.