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Finding the Fourth Proportional to 118,175.94, 163,142.94 and 91,258.02

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Solution

The fourth proportional to 118,175.94, 163,142.94 and 91,258.02 is: 125,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,175.94 : 163,142.94 = 91,258.02 : x
  2. Step 2: Convert to fraction form
    118,175.94/163,142.94 = 91,258.02/x
  3. Step 3: Cross multiply
    118,175.94x = 163,142.94 × 91,258.02
  4. Step 4: Simplify right side
    118,175.94x = 14,888,101,681.38
  5. Step 5: Solve for x
    x = 14,888,101,681.38/118,175.94
  6. Step 6: Final answer
    x = 125,982.51

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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.