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Finding the Fourth Proportional to 118,343.98, 163,315.99 and 64,630.58

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Solution

The fourth proportional to 118,343.98, 163,315.99 and 64,630.58 is: 89,190.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,343.98 : 163,315.99 = 64,630.58 : x
  2. Step 2: Convert to fraction form
    118,343.98/163,315.99 = 64,630.58/x
  3. Step 3: Cross multiply
    118,343.98x = 163,315.99 × 64,630.58
  4. Step 4: Simplify right side
    118,343.98x = 10,555,207,062.28
  5. Step 5: Solve for x
    x = 10,555,207,062.28/118,343.98
  6. Step 6: Final answer
    x = 89,190.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.