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Finding the Fourth Proportional to 118,307.97, 163,262.77 and 67,319.55

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Solution

The fourth proportional to 118,307.97, 163,262.77 and 67,319.55 is: 92,899.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,307.97 : 163,262.77 = 67,319.55 : x
  2. Step 2: Convert to fraction form
    118,307.97/163,262.77 = 67,319.55/x
  3. Step 3: Cross multiply
    118,307.97x = 163,262.77 × 67,319.55
  4. Step 4: Simplify right side
    118,307.97x = 10,990,776,208.15
  5. Step 5: Solve for x
    x = 10,990,776,208.15/118,307.97
  6. Step 6: Final answer
    x = 92,899.71

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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.