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Finding the Fourth Proportional to 93,161.97, 128,559.65 and 52,875

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Solution

The fourth proportional to 93,161.97, 128,559.65 and 52,875 is: 72,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,161.97 : 128,559.65 = 52,875 : x
  2. Step 2: Convert to fraction form
    93,161.97/128,559.65 = 52,875/x
  3. Step 3: Cross multiply
    93,161.97x = 128,559.65 × 52,875
  4. Step 4: Simplify right side
    93,161.97x = 6,797,591,493.75
  5. Step 5: Solve for x
    x = 6,797,591,493.75/93,161.97
  6. Step 6: Final answer
    x = 72,965.30

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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.