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Finding the Fourth Proportional to 101,838.56, 140,520.18 and 56,509.34

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Solution

The fourth proportional to 101,838.56, 140,520.18 and 56,509.34 is: 77,973.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,838.56 : 140,520.18 = 56,509.34 : x
  2. Step 2: Convert to fraction form
    101,838.56/140,520.18 = 56,509.34/x
  3. Step 3: Cross multiply
    101,838.56x = 140,520.18 × 56,509.34
  4. Step 4: Simplify right side
    101,838.56x = 7,940,702,628.48
  5. Step 5: Solve for x
    x = 7,940,702,628.48/101,838.56
  6. Step 6: Final answer
    x = 77,973.44

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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.