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Finding the Fourth Proportional to 99,028, 148,561.44 and 43,624

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Solution

The fourth proportional to 99,028, 148,561.44 and 43,624 is: 65,444.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,028 : 148,561.44 = 43,624 : x
  2. Step 2: Convert to fraction form
    99,028/148,561.44 = 43,624/x
  3. Step 3: Cross multiply
    99,028x = 148,561.44 × 43,624
  4. Step 4: Simplify right side
    99,028x = 6,480,844,258.56
  5. Step 5: Solve for x
    x = 6,480,844,258.56/99,028
  6. Step 6: Final answer
    x = 65,444.56

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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.