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Finding the Fourth Proportional to 101,606.81, 140,214.80 and 55,666.14

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Solution

The fourth proportional to 101,606.81, 140,214.80 and 55,666.14 is: 76,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,606.81 : 140,214.80 = 55,666.14 : x
  2. Step 2: Convert to fraction form
    101,606.81/140,214.80 = 55,666.14/x
  3. Step 3: Cross multiply
    101,606.81x = 140,214.80 × 55,666.14
  4. Step 4: Simplify right side
    101,606.81x = 7,805,215,987.11
  5. Step 5: Solve for x
    x = 7,805,215,987.11/101,606.81
  6. Step 6: Final answer
    x = 76,817.85

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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.