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Finding the Fourth Proportional to 203,710.95, 305,570.34 and 70,595.55

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Solution

The fourth proportional to 203,710.95, 305,570.34 and 70,595.55 is: 105,894.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,710.95 : 305,570.34 = 70,595.55 : x
  2. Step 2: Convert to fraction form
    203,710.95/305,570.34 = 70,595.55/x
  3. Step 3: Cross multiply
    203,710.95x = 305,570.34 × 70,595.55
  4. Step 4: Simplify right side
    203,710.95x = 21,571,906,215.99
  5. Step 5: Solve for x
    x = 21,571,906,215.99/203,710.95
  6. Step 6: Final answer
    x = 105,894.68

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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.