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Finding the Fourth Proportional to 116,420.80, 174,890.40 and 111,697.60

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Solution

The fourth proportional to 116,420.80, 174,890.40 and 111,697.60 is: 167,795.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,420.80 : 174,890.40 = 111,697.60 : x
  2. Step 2: Convert to fraction form
    116,420.80/174,890.40 = 111,697.60/x
  3. Step 3: Cross multiply
    116,420.80x = 174,890.40 × 111,697.60
  4. Step 4: Simplify right side
    116,420.80x = 19,534,837,943.04
  5. Step 5: Solve for x
    x = 19,534,837,943.04/116,420.80
  6. Step 6: Final answer
    x = 167,795.08

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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.