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Finding the Fourth Proportional to 373,963.20, 561,139.20 and 163,622.40

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Solution

The fourth proportional to 373,963.20, 561,139.20 and 163,622.40 is: 245,518.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,963.20 : 561,139.20 = 163,622.40 : x
  2. Step 2: Convert to fraction form
    373,963.20/561,139.20 = 163,622.40/x
  3. Step 3: Cross multiply
    373,963.20x = 561,139.20 × 163,622.40
  4. Step 4: Simplify right side
    373,963.20x = 91,814,942,638.08
  5. Step 5: Solve for x
    x = 91,814,942,638.08/373,963.20
  6. Step 6: Final answer
    x = 245,518.66

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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.