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Finding the Fourth Proportional to 111,984.40, 168,041.40 and 41,870.80

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Solution

The fourth proportional to 111,984.40, 168,041.40 and 41,870.80 is: 62,830.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,984.40 : 168,041.40 = 41,870.80 : x
  2. Step 2: Convert to fraction form
    111,984.40/168,041.40 = 41,870.80/x
  3. Step 3: Cross multiply
    111,984.40x = 168,041.40 × 41,870.80
  4. Step 4: Simplify right side
    111,984.40x = 7,036,027,851.12
  5. Step 5: Solve for x
    x = 7,036,027,851.12/111,984.40
  6. Step 6: Final answer
    x = 62,830.43

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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.