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Finding the Fourth Proportional to 158,604.90, 218,817.99 and 90,572.82

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Solution

The fourth proportional to 158,604.90, 218,817.99 and 90,572.82 is: 124,958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,604.90 : 218,817.99 = 90,572.82 : x
  2. Step 2: Convert to fraction form
    158,604.90/218,817.99 = 90,572.82/x
  3. Step 3: Cross multiply
    158,604.90x = 218,817.99 × 90,572.82
  4. Step 4: Simplify right side
    158,604.90x = 19,818,962,421.03
  5. Step 5: Solve for x
    x = 19,818,962,421.03/158,604.90
  6. Step 6: Final answer
    x = 124,958.07

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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.