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Finding the Fourth Proportional to 101,189.13, 139,637.32 and 55,866.16

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Solution

The fourth proportional to 101,189.13, 139,637.32 and 55,866.16 is: 77,093.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,189.13 : 139,637.32 = 55,866.16 : x
  2. Step 2: Convert to fraction form
    101,189.13/139,637.32 = 55,866.16/x
  3. Step 3: Cross multiply
    101,189.13x = 139,637.32 × 55,866.16
  4. Step 4: Simplify right side
    101,189.13x = 7,801,000,861.09
  5. Step 5: Solve for x
    x = 7,801,000,861.09/101,189.13
  6. Step 6: Final answer
    x = 77,093.27

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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.