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Finding the Fourth Proportional to 611,191.86, 843,402.54 and 339,238.37

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Solution

The fourth proportional to 611,191.86, 843,402.54 and 339,238.37 is: 468,125.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,191.86 : 843,402.54 = 339,238.37 : x
  2. Step 2: Convert to fraction form
    611,191.86/843,402.54 = 339,238.37/x
  3. Step 3: Cross multiply
    611,191.86x = 843,402.54 × 339,238.37
  4. Step 4: Simplify right side
    611,191.86x = 286,114,498,706.45
  5. Step 5: Solve for x
    x = 286,114,498,706.45/611,191.86
  6. Step 6: Final answer
    x = 468,125.51

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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.