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Finding the Fourth Proportional to 187,654.88, 258,993.96 and 107,085.80

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Solution

The fourth proportional to 187,654.88, 258,993.96 and 107,085.80 is: 147,795.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,654.88 : 258,993.96 = 107,085.80 : x
  2. Step 2: Convert to fraction form
    187,654.88/258,993.96 = 107,085.80/x
  3. Step 3: Cross multiply
    187,654.88x = 258,993.96 × 107,085.80
  4. Step 4: Simplify right side
    187,654.88x = 27,734,575,401.77
  5. Step 5: Solve for x
    x = 27,734,575,401.77/187,654.88
  6. Step 6: Final answer
    x = 147,795.65

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1.5x scale

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.