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Finding the Fourth Proportional to 328,911.48, 453,820.86 and 192,938.40

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Solution

The fourth proportional to 328,911.48, 453,820.86 and 192,938.40 is: 266,209.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,911.48 : 453,820.86 = 192,938.40 : x
  2. Step 2: Convert to fraction form
    328,911.48/453,820.86 = 192,938.40/x
  3. Step 3: Cross multiply
    328,911.48x = 453,820.86 × 192,938.40
  4. Step 4: Simplify right side
    328,911.48x = 87,559,470,615.02
  5. Step 5: Solve for x
    x = 87,559,470,615.02/328,911.48
  6. Step 6: Final answer
    x = 266,209.83

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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.