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Finding the Fourth Proportional to 101,535.96, 140,193.54 and 81,503.04

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Solution

The fourth proportional to 101,535.96, 140,193.54 and 81,503.04 is: 112,533.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,535.96 : 140,193.54 = 81,503.04 : x
  2. Step 2: Convert to fraction form
    101,535.96/140,193.54 = 81,503.04/x
  3. Step 3: Cross multiply
    101,535.96x = 140,193.54 × 81,503.04
  4. Step 4: Simplify right side
    101,535.96x = 11,426,199,698.36
  5. Step 5: Solve for x
    x = 11,426,199,698.36/101,535.96
  6. Step 6: Final answer
    x = 112,533.53

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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.