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Finding the Fourth Proportional to 328,915.90, 453,911.39 and 193,047.84

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Solution

The fourth proportional to 328,915.90, 453,911.39 and 193,047.84 is: 266,410.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,915.90 : 453,911.39 = 193,047.84 : x
  2. Step 2: Convert to fraction form
    328,915.90/453,911.39 = 193,047.84/x
  3. Step 3: Cross multiply
    328,915.90x = 453,911.39 × 193,047.84
  4. Step 4: Simplify right side
    328,915.90x = 87,626,613,278.01
  5. Step 5: Solve for x
    x = 87,626,613,278.01/328,915.90
  6. Step 6: Final answer
    x = 266,410.39

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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.