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Finding the Fourth Proportional to 104,637.80, 156,956.70 and 55,485.80

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Solution

The fourth proportional to 104,637.80, 156,956.70 and 55,485.80 is: 83,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,637.80 : 156,956.70 = 55,485.80 : x
  2. Step 2: Convert to fraction form
    104,637.80/156,956.70 = 55,485.80/x
  3. Step 3: Cross multiply
    104,637.80x = 156,956.70 × 55,485.80
  4. Step 4: Simplify right side
    104,637.80x = 8,708,868,064.86
  5. Step 5: Solve for x
    x = 8,708,868,064.86/104,637.80
  6. Step 6: Final answer
    x = 83,228.70

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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.