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Finding the Fourth Proportional to 318,594.01, 439,659.71 and 173,400.84

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Solution

The fourth proportional to 318,594.01, 439,659.71 and 173,400.84 is: 239,293.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,594.01 : 439,659.71 = 173,400.84 : x
  2. Step 2: Convert to fraction form
    318,594.01/439,659.71 = 173,400.84/x
  3. Step 3: Cross multiply
    318,594.01x = 439,659.71 × 173,400.84
  4. Step 4: Simplify right side
    318,594.01x = 76,237,361,791.17
  5. Step 5: Solve for x
    x = 76,237,361,791.17/318,594.01
  6. Step 6: Final answer
    x = 239,293.14

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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.