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Finding the Fourth Proportional to 116,227.20, 174,340.80 and 31,987.20

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Solution

The fourth proportional to 116,227.20, 174,340.80 and 31,987.20 is: 47,980.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,227.20 : 174,340.80 = 31,987.20 : x
  2. Step 2: Convert to fraction form
    116,227.20/174,340.80 = 31,987.20/x
  3. Step 3: Cross multiply
    116,227.20x = 174,340.80 × 31,987.20
  4. Step 4: Simplify right side
    116,227.20x = 5,576,674,037.76
  5. Step 5: Solve for x
    x = 5,576,674,037.76/116,227.20
  6. Step 6: Final answer
    x = 47,980.80

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1.5x scale

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.