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Finding the Fourth Proportional to 163,518.84, 225,662.28 and 99,885.24

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Solution

The fourth proportional to 163,518.84, 225,662.28 and 99,885.24 is: 137,845.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,518.84 : 225,662.28 = 99,885.24 : x
  2. Step 2: Convert to fraction form
    163,518.84/225,662.28 = 99,885.24/x
  3. Step 3: Cross multiply
    163,518.84x = 225,662.28 × 99,885.24
  4. Step 4: Simplify right side
    163,518.84x = 22,540,330,996.75
  5. Step 5: Solve for x
    x = 22,540,330,996.75/163,518.84
  6. Step 6: Final answer
    x = 137,845.47

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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.