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Finding the Fourth Proportional to 121,611.40, 182,417.10 and 65,624.20

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Solution

The fourth proportional to 121,611.40, 182,417.10 and 65,624.20 is: 98,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,611.40 : 182,417.10 = 65,624.20 : x
  2. Step 2: Convert to fraction form
    121,611.40/182,417.10 = 65,624.20/x
  3. Step 3: Cross multiply
    121,611.40x = 182,417.10 × 65,624.20
  4. Step 4: Simplify right side
    121,611.40x = 11,970,976,253.82
  5. Step 5: Solve for x
    x = 11,970,976,253.82/121,611.40
  6. Step 6: Final answer
    x = 98,436.30

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Similar ratio
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1.5x scale

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.