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Finding the Fourth Proportional to 111,054.40, 153,253.12 and 68,027.20

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Solution

The fourth proportional to 111,054.40, 153,253.12 and 68,027.20 is: 93,876.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,054.40 : 153,253.12 = 68,027.20 : x
  2. Step 2: Convert to fraction form
    111,054.40/153,253.12 = 68,027.20/x
  3. Step 3: Cross multiply
    111,054.40x = 153,253.12 × 68,027.20
  4. Step 4: Simplify right side
    111,054.40x = 10,425,380,644.86
  5. Step 5: Solve for x
    x = 10,425,380,644.86/111,054.40
  6. Step 6: Final answer
    x = 93,876.34

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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.