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Finding the Fourth Proportional to 443,759.10, 665,638.65 and 148,271.10

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Solution

The fourth proportional to 443,759.10, 665,638.65 and 148,271.10 is: 222,406.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,759.10 : 665,638.65 = 148,271.10 : x
  2. Step 2: Convert to fraction form
    443,759.10/665,638.65 = 148,271.10/x
  3. Step 3: Cross multiply
    443,759.10x = 665,638.65 × 148,271.10
  4. Step 4: Simplify right side
    443,759.10x = 98,694,974,838.02
  5. Step 5: Solve for x
    x = 98,694,974,838.02/443,759.10
  6. Step 6: Final answer
    x = 222,406.65

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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.