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Finding the Fourth Proportional to 611,186.21, 843,347.04 and 339,256.18

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Solution

The fourth proportional to 611,186.21, 843,347.04 and 339,256.18 is: 468,123.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,186.21 : 843,347.04 = 339,256.18 : x
  2. Step 2: Convert to fraction form
    611,186.21/843,347.04 = 339,256.18/x
  3. Step 3: Cross multiply
    611,186.21x = 843,347.04 × 339,256.18
  4. Step 4: Simplify right side
    611,186.21x = 286,110,690,987.97
  5. Step 5: Solve for x
    x = 286,110,690,987.97/611,186.21
  6. Step 6: Final answer
    x = 468,123.61

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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.