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Finding the Fourth Proportional to 423,779.59, 584,571.49 and 253,915.30

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Solution

The fourth proportional to 423,779.59, 584,571.49 and 253,915.30 is: 350,256.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,779.59 : 584,571.49 = 253,915.30 : x
  2. Step 2: Convert to fraction form
    423,779.59/584,571.49 = 253,915.30/x
  3. Step 3: Cross multiply
    423,779.59x = 584,571.49 × 253,915.30
  4. Step 4: Simplify right side
    423,779.59x = 148,431,645,254.80
  5. Step 5: Solve for x
    x = 148,431,645,254.80/423,779.59
  6. Step 6: Final answer
    x = 350,256.71

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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.