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Finding the Fourth Proportional to 645,777.19, 968,702.22 and 196,512.70

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Solution

The fourth proportional to 645,777.19, 968,702.22 and 196,512.70 is: 294,780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,777.19 : 968,702.22 = 196,512.70 : x
  2. Step 2: Convert to fraction form
    645,777.19/968,702.22 = 196,512.70/x
  3. Step 3: Cross multiply
    645,777.19x = 968,702.22 × 196,512.70
  4. Step 4: Simplify right side
    645,777.19x = 190,362,288,748.19
  5. Step 5: Solve for x
    x = 190,362,288,748.19/645,777.19
  6. Step 6: Final answer
    x = 294,780.14

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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.