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Finding the Fourth Proportional to 448,666.50, 619,137.90 and 267,374.28

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Solution

The fourth proportional to 448,666.50, 619,137.90 and 267,374.28 is: 368,963.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,666.50 : 619,137.90 = 267,374.28 : x
  2. Step 2: Convert to fraction form
    448,666.50/619,137.90 = 267,374.28/x
  3. Step 3: Cross multiply
    448,666.50x = 619,137.90 × 267,374.28
  4. Step 4: Simplify right side
    448,666.50x = 165,541,550,233.21
  5. Step 5: Solve for x
    x = 165,541,550,233.21/448,666.50
  6. Step 6: Final answer
    x = 368,963.47

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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.