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Finding the Fourth Proportional to 159,491.17, 220,189.45 and 105,848.92

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Solution

The fourth proportional to 159,491.17, 220,189.45 and 105,848.92 is: 146,132.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,491.17 : 220,189.45 = 105,848.92 : x
  2. Step 2: Convert to fraction form
    159,491.17/220,189.45 = 105,848.92/x
  3. Step 3: Cross multiply
    159,491.17x = 220,189.45 × 105,848.92
  4. Step 4: Simplify right side
    159,491.17x = 23,306,814,662.80
  5. Step 5: Solve for x
    x = 23,306,814,662.80/159,491.17
  6. Step 6: Final answer
    x = 146,132.32

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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.