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Finding the Fourth Proportional to 55,107.17, 82,619.13 and 28,424.55

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Solution

The fourth proportional to 55,107.17, 82,619.13 and 28,424.55 is: 42,615.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,107.17 : 82,619.13 = 28,424.55 : x
  2. Step 2: Convert to fraction form
    55,107.17/82,619.13 = 28,424.55/x
  3. Step 3: Cross multiply
    55,107.17x = 82,619.13 × 28,424.55
  4. Step 4: Simplify right side
    55,107.17x = 2,348,411,591.64
  5. Step 5: Solve for x
    x = 2,348,411,591.64/55,107.17
  6. Step 6: Final answer
    x = 42,615.36

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1.5x scale

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.