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Finding the Fourth Proportional to 443,316.40, 664,780.20 and 176,988.40

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Solution

The fourth proportional to 443,316.40, 664,780.20 and 176,988.40 is: 265,404.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,316.40 : 664,780.20 = 176,988.40 : x
  2. Step 2: Convert to fraction form
    443,316.40/664,780.20 = 176,988.40/x
  3. Step 3: Cross multiply
    443,316.40x = 664,780.20 × 176,988.40
  4. Step 4: Simplify right side
    443,316.40x = 117,658,383,949.68
  5. Step 5: Solve for x
    x = 117,658,383,949.68/443,316.40
  6. Step 6: Final answer
    x = 265,404.99

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1.5x scale

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.