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Finding the Fourth Proportional to 443,423.14, 665,129.82 and 127,869.82

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Solution

The fourth proportional to 443,423.14, 665,129.82 and 127,869.82 is: 191,803.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,423.14 : 665,129.82 = 127,869.82 : x
  2. Step 2: Convert to fraction form
    443,423.14/665,129.82 = 127,869.82/x
  3. Step 3: Cross multiply
    443,423.14x = 665,129.82 × 127,869.82
  4. Step 4: Simplify right side
    443,423.14x = 85,050,030,360.03
  5. Step 5: Solve for x
    x = 85,050,030,360.03/443,423.14
  6. Step 6: Final answer
    x = 191,803.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.