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Finding the Fourth Proportional to 117,779.60, 176,410.20 and 104,646.80

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Solution

The fourth proportional to 117,779.60, 176,410.20 and 104,646.80 is: 156,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,779.60 : 176,410.20 = 104,646.80 : x
  2. Step 2: Convert to fraction form
    117,779.60/176,410.20 = 104,646.80/x
  3. Step 3: Cross multiply
    117,779.60x = 176,410.20 × 104,646.80
  4. Step 4: Simplify right side
    117,779.60x = 18,460,762,917.36
  5. Step 5: Solve for x
    x = 18,460,762,917.36/117,779.60
  6. Step 6: Final answer
    x = 156,739.90

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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.