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Finding the Fourth Proportional to 612,861.90, 919,292.73 and 192,171.66

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Solution

The fourth proportional to 612,861.90, 919,292.73 and 192,171.66 is: 288,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,861.90 : 919,292.73 = 192,171.66 : x
  2. Step 2: Convert to fraction form
    612,861.90/919,292.73 = 192,171.66/x
  3. Step 3: Cross multiply
    612,861.90x = 919,292.73 × 192,171.66
  4. Step 4: Simplify right side
    612,861.90x = 176,662,009,950.03
  5. Step 5: Solve for x
    x = 176,662,009,950.03/612,861.90
  6. Step 6: Final answer
    x = 288,257.45

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1.5x scale

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.