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Finding the Fourth Proportional to 101,620.80, 140,237.76 and 56,300.16

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Solution

The fourth proportional to 101,620.80, 140,237.76 and 56,300.16 is: 77,694.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,620.80 : 140,237.76 = 56,300.16 : x
  2. Step 2: Convert to fraction form
    101,620.80/140,237.76 = 56,300.16/x
  3. Step 3: Cross multiply
    101,620.80x = 140,237.76 × 56,300.16
  4. Step 4: Simplify right side
    101,620.80x = 7,895,408,326.04
  5. Step 5: Solve for x
    x = 7,895,408,326.04/101,620.80
  6. Step 6: Final answer
    x = 77,694.81

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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.