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Finding the Fourth Proportional to 121,970.80, 182,956.20 and 59,762.80

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Solution

The fourth proportional to 121,970.80, 182,956.20 and 59,762.80 is: 89,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,970.80 : 182,956.20 = 59,762.80 : x
  2. Step 2: Convert to fraction form
    121,970.80/182,956.20 = 59,762.80/x
  3. Step 3: Cross multiply
    121,970.80x = 182,956.20 × 59,762.80
  4. Step 4: Simplify right side
    121,970.80x = 10,933,974,789.36
  5. Step 5: Solve for x
    x = 10,933,974,789.36/121,970.80
  6. Step 6: Final answer
    x = 89,644.20

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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.