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Finding the Fourth Proportional to 108,463.62, 149,574.65 and 84,581.58

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Solution

The fourth proportional to 108,463.62, 149,574.65 and 84,581.58 is: 116,640.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,463.62 : 149,574.65 = 84,581.58 : x
  2. Step 2: Convert to fraction form
    108,463.62/149,574.65 = 84,581.58/x
  3. Step 3: Cross multiply
    108,463.62x = 149,574.65 × 84,581.58
  4. Step 4: Simplify right side
    108,463.62x = 12,651,259,802.04
  5. Step 5: Solve for x
    x = 12,651,259,802.04/108,463.62
  6. Step 6: Final answer
    x = 116,640.58

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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.