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Finding the Fourth Proportional to 111,228.48, 153,489.60 and 60,926.40

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Solution

The fourth proportional to 111,228.48, 153,489.60 and 60,926.40 is: 84,075.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,228.48 : 153,489.60 = 60,926.40 : x
  2. Step 2: Convert to fraction form
    111,228.48/153,489.60 = 60,926.40/x
  3. Step 3: Cross multiply
    111,228.48x = 153,489.60 × 60,926.40
  4. Step 4: Simplify right side
    111,228.48x = 9,351,568,765.44
  5. Step 5: Solve for x
    x = 9,351,568,765.44/111,228.48
  6. Step 6: Final answer
    x = 84,075.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.