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Finding the Fourth Proportional to 326,706.52, 490,058.40 and 127,166.06

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Solution

The fourth proportional to 326,706.52, 490,058.40 and 127,166.06 is: 190,748.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,706.52 : 490,058.40 = 127,166.06 : x
  2. Step 2: Convert to fraction form
    326,706.52/490,058.40 = 127,166.06/x
  3. Step 3: Cross multiply
    326,706.52x = 490,058.40 × 127,166.06
  4. Step 4: Simplify right side
    326,706.52x = 62,318,795,897.90
  5. Step 5: Solve for x
    x = 62,318,795,897.90/326,706.52
  6. Step 6: Final answer
    x = 190,748.55

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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.