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Finding the Fourth Proportional to 161,530.30, 222,911.84 and 89,908.80

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Solution

The fourth proportional to 161,530.30, 222,911.84 and 89,908.80 is: 124,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,530.30 : 222,911.84 = 89,908.80 : x
  2. Step 2: Convert to fraction form
    161,530.30/222,911.84 = 89,908.80/x
  3. Step 3: Cross multiply
    161,530.30x = 222,911.84 × 89,908.80
  4. Step 4: Simplify right side
    161,530.30x = 20,041,736,040.19
  5. Step 5: Solve for x
    x = 20,041,736,040.19/161,530.30
  6. Step 6: Final answer
    x = 124,074.16

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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.