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Finding the Fourth Proportional to 101,638.77, 140,257.44 and 56,317.41

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Solution

The fourth proportional to 101,638.77, 140,257.44 and 56,317.41 is: 77,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,638.77 : 140,257.44 = 56,317.41 : x
  2. Step 2: Convert to fraction form
    101,638.77/140,257.44 = 56,317.41/x
  3. Step 3: Cross multiply
    101,638.77x = 140,257.44 × 56,317.41
  4. Step 4: Simplify right side
    101,638.77x = 7,898,935,754.03
  5. Step 5: Solve for x
    x = 7,898,935,754.03/101,638.77
  6. Step 6: Final answer
    x = 77,715.77

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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.