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Finding the Fourth Proportional to 121,303.20, 181,954.80 and 116,464.80

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Solution

The fourth proportional to 121,303.20, 181,954.80 and 116,464.80 is: 174,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,303.20 : 181,954.80 = 116,464.80 : x
  2. Step 2: Convert to fraction form
    121,303.20/181,954.80 = 116,464.80/x
  3. Step 3: Cross multiply
    121,303.20x = 181,954.80 × 116,464.80
  4. Step 4: Simplify right side
    121,303.20x = 21,191,329,391.04
  5. Step 5: Solve for x
    x = 21,191,329,391.04/121,303.20
  6. Step 6: Final answer
    x = 174,697.20

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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.