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Finding the Fourth Proportional to 220,492.80, 330,782.40 and 94,132.80

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Solution

The fourth proportional to 220,492.80, 330,782.40 and 94,132.80 is: 141,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,492.80 : 330,782.40 = 94,132.80 : x
  2. Step 2: Convert to fraction form
    220,492.80/330,782.40 = 94,132.80/x
  3. Step 3: Cross multiply
    220,492.80x = 330,782.40 × 94,132.80
  4. Step 4: Simplify right side
    220,492.80x = 31,137,473,502.72
  5. Step 5: Solve for x
    x = 31,137,473,502.72/220,492.80
  6. Step 6: Final answer
    x = 141,217.64

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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.