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Finding the Fourth Proportional to 339,423.35, 468,381.69 and 186,431.76

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Solution

The fourth proportional to 339,423.35, 468,381.69 and 186,431.76 is: 257,263.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,423.35 : 468,381.69 = 186,431.76 : x
  2. Step 2: Convert to fraction form
    339,423.35/468,381.69 = 186,431.76/x
  3. Step 3: Cross multiply
    339,423.35x = 468,381.69 × 186,431.76
  4. Step 4: Simplify right side
    339,423.35x = 87,321,222,818.47
  5. Step 5: Solve for x
    x = 87,321,222,818.47/339,423.35
  6. Step 6: Final answer
    x = 257,263.46

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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.