Home / 645,780.19-968,706.72-196,515.70

Finding the Fourth Proportional to 645,780.19, 968,706.72 and 196,515.70

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Solution

The fourth proportional to 645,780.19, 968,706.72 and 196,515.70 is: 294,784.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,780.19 : 968,706.72 = 196,515.70 : x
  2. Step 2: Convert to fraction form
    645,780.19/968,706.72 = 196,515.70/x
  3. Step 3: Cross multiply
    645,780.19x = 968,706.72 × 196,515.70
  4. Step 4: Simplify right side
    645,780.19x = 190,366,079,175.50
  5. Step 5: Solve for x
    x = 190,366,079,175.50/645,780.19
  6. Step 6: Final answer
    x = 294,784.64

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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.