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Finding the Fourth Proportional to 119,390.64, 179,124.84 and 57,066

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Solution

The fourth proportional to 119,390.64, 179,124.84 and 57,066 is: 85,617.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,390.64 : 179,124.84 = 57,066 : x
  2. Step 2: Convert to fraction form
    119,390.64/179,124.84 = 57,066/x
  3. Step 3: Cross multiply
    119,390.64x = 179,124.84 × 57,066
  4. Step 4: Simplify right side
    119,390.64x = 10,221,938,119.44
  5. Step 5: Solve for x
    x = 10,221,938,119.44/119,390.64
  6. Step 6: Final answer
    x = 85,617.58

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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.