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Finding the Fourth Proportional to 457,953.60, 686,919.60 and 125,529.60

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Solution

The fourth proportional to 457,953.60, 686,919.60 and 125,529.60 is: 188,291.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,953.60 : 686,919.60 = 125,529.60 : x
  2. Step 2: Convert to fraction form
    457,953.60/686,919.60 = 125,529.60/x
  3. Step 3: Cross multiply
    457,953.60x = 686,919.60 × 125,529.60
  4. Step 4: Simplify right side
    457,953.60x = 86,228,742,620.16
  5. Step 5: Solve for x
    x = 86,228,742,620.16/457,953.60
  6. Step 6: Final answer
    x = 188,291.44

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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.