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Finding the Fourth Proportional to 464,354.43, 696,485.01 and 127,428.97

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Solution

The fourth proportional to 464,354.43, 696,485.01 and 127,428.97 is: 191,130.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,354.43 : 696,485.01 = 127,428.97 : x
  2. Step 2: Convert to fraction form
    464,354.43/696,485.01 = 127,428.97/x
  3. Step 3: Cross multiply
    464,354.43x = 696,485.01 × 127,428.97
  4. Step 4: Simplify right side
    464,354.43x = 88,752,368,370.98
  5. Step 5: Solve for x
    x = 88,752,368,370.98/464,354.43
  6. Step 6: Final answer
    x = 191,130.66

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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.