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Finding the Fourth Proportional to 101,349.28, 139,861.08 and 56,028.41

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Solution

The fourth proportional to 101,349.28, 139,861.08 and 56,028.41 is: 77,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,349.28 : 139,861.08 = 56,028.41 : x
  2. Step 2: Convert to fraction form
    101,349.28/139,861.08 = 56,028.41/x
  3. Step 3: Cross multiply
    101,349.28x = 139,861.08 × 56,028.41
  4. Step 4: Simplify right side
    101,349.28x = 7,836,193,758.46
  5. Step 5: Solve for x
    x = 7,836,193,758.46/101,349.28
  6. Step 6: Final answer
    x = 77,318.70

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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.