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Finding the Fourth Proportional to 111,207.95, 153,467.28 and 60,221.28

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Solution

The fourth proportional to 111,207.95, 153,467.28 and 60,221.28 is: 83,105.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,207.95 : 153,467.28 = 60,221.28 : x
  2. Step 2: Convert to fraction form
    111,207.95/153,467.28 = 60,221.28/x
  3. Step 3: Cross multiply
    111,207.95x = 153,467.28 × 60,221.28
  4. Step 4: Simplify right side
    111,207.95x = 9,241,996,039.72
  5. Step 5: Solve for x
    x = 9,241,996,039.72/111,207.95
  6. Step 6: Final answer
    x = 83,105.53

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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.