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Finding the Fourth Proportional to 452,915.40, 679,374.72 and 137,375.04

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Solution

The fourth proportional to 452,915.40, 679,374.72 and 137,375.04 is: 206,063.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,915.40 : 679,374.72 = 137,375.04 : x
  2. Step 2: Convert to fraction form
    452,915.40/679,374.72 = 137,375.04/x
  3. Step 3: Cross multiply
    452,915.40x = 679,374.72 × 137,375.04
  4. Step 4: Simplify right side
    452,915.40x = 93,329,129,334.99
  5. Step 5: Solve for x
    x = 93,329,129,334.99/452,915.40
  6. Step 6: Final answer
    x = 206,063.05

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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.