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Finding the Fourth Proportional to 134,509.20, 201,690.90 and 55,534.20

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Solution

The fourth proportional to 134,509.20, 201,690.90 and 55,534.20 is: 83,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,509.20 : 201,690.90 = 55,534.20 : x
  2. Step 2: Convert to fraction form
    134,509.20/201,690.90 = 55,534.20/x
  3. Step 3: Cross multiply
    134,509.20x = 201,690.90 × 55,534.20
  4. Step 4: Simplify right side
    134,509.20x = 11,200,742,778.78
  5. Step 5: Solve for x
    x = 11,200,742,778.78/134,509.20
  6. Step 6: Final answer
    x = 83,271.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.